Name: SPRUCE SPAR STOCK
Brand: Aircraft Spruce
SKU: 02-18234
Price: 5.7 CAD
Availability: InStock

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SPRUCE SPAR STOCK

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Thickness (In.)	Width (In.)	Part Number	Price / Ft	Length	Quantity	Sub-Total
1/8	2-3/4	02-18234	$5.70
1/8	3	02-183	$5.70
1/8	3-1/4	02-18314	$5.70
1/8	3-1/2	02-18312	$5.70
1/8	3-3/4	02-18334	$5.70
1/8	4	02-184	$7.50
1/8	4-1/4	02-18414	$7.50
1/8	4-1/2	02-18412	$7.50
1/8	4-3/4	02-18434	$7.50
1/8	5	02-185	$8.50
1/8	5-1/4	02-18514	$8.50
1/8	5-1/2	02-18512	$8.50
1/8	5-3/4	02-18534	$8.50
1/8	6	02-186	$9.75
3/16	2-3/4	02-316234	$5.70
3/16	3	02-3163	$5.70
3/16	3-1/4	02-316314	$5.70
3/16	3-1/2	02-316312	$5.70
3/16	3-3/4	02-316334	$5.70
3/16	4	02-3164	$7.50
3/16	4-1/4	02-316414	$7.50
3/16	4-1/2	02-316412	$7.50
3/16	4-3/4	02-316434	$7.50
3/16	5	02-3165	$8.50
3/16	5-1/4	02-316514	$8.50
3/16	5-1/2	02-316512	$8.50
3/16		02-316534	$8.50
3/16	6	02-3166	$9.75
1/4	2-3/4	02-14234	$5.70
1/4	3	02-143	$5.70
1/4	3-1/4	02-14314	$5.70
1/4	3-1/2	02-14312	$5.70
1/4	3-3/4	02-14334	$5.70
1/4	4	02-144	$7.50
1/4	4-1/4	02-14414	$7.50
1/4	4-1/2	02-14412	$7.50
1/4	4-3/4	02-14434	$7.50
1/4	5	02-145	$8.50
1/4	5-1/4	02-14514	$8.50
1/4	5-1/2	02-14512	$8.50
1/4	5-3/4	02-14534	$8.50
1/4	6	02-146	$9.75
5/16	2-3/4	02-516234	$11.50
5/16	3	02-5163	$11.50
5/16	3-1/4	02-516314	$11.50
5/16	3-1/2	02-516312	$11.50
5/16	3-3/4	02-516334	$11.50
5/16	4	02-5164	$14.50
5/16	4-1/4	02-516414	$14.50
5/16	4-1/2	02-516412	$14.50
5/16	4-3/4	02-516434	$14.50
5/16	5	02-5165	$17.50
5/16	5-1/4	02-516514	$17.50
5/16	5-1/2	02-516512	$17.50
5/16	5-3/4	02-516534	$17.50
5/16	6	02-5166	$19.90
5/16	8-3/4	02-516834	$14.50
5/16	9	02-5169	$15.75
3/8	2-3/4	02-38234	$11.50
3/8	3	02-383	$11.50
3/8	3-1/4	02-38314	$11.50
3/8	3-1/2	02-38312	$11.50
3/8	3-3/4	02-38334	$11.50
3/8	4	02-384	$14.50
3/8	4-1/4	02-38414	$14.50
3/8	4-1/2	02-38412	$14.50
3/8	4-3/4	02-38434	$14.50
3/8	5	02-385	$17.50
3/8	5-1/4	02-38514	$17.50
3/8	5-1/2	02-38512	$17.50
3/8	5-3/4	02-38534	$17.50
3/8	6	02-386	$19.90
1/2	2-3/4	02-12234	$11.50
1/2	3	02-123	$11.50
1/2	3-1/4	02-12314	$11.50
1/2	3-1/2	02-12312	$11.50
1/2	3-3/4	02-12334	$11.50
1/2	4	02-124	$14.50
1/2	4-1/4	02-12414	$14.50
1/2	4-1/2	02-12412	$14.50
1/2	4-3/4	02-12434	$14.50
1/2	5	02-125	$17.50
1/2	5-1/4	02-12514	$17.50
1/2	5-1/2	02-12512	$17.50
1/2	5-3/4	02-12534	$17.50
1/2	6	02-126	$19.90
1/2	7	02-127	$29.65
5/8	2-3/4	02-58234	$11.50
5/8	3	02-583	$11.50
5/8	3-1/4	02-58314	$11.50
5/8	3-1/2	02-58312	$11.50
5/8	3-3/4	02-58334	$11.50
5/8	4	02-584	$14.50
5/8	4-1/4	02-58414	$14.50
5/8	4-1/2	02-58412	$14.50
5/8	4-3/4	02-58434	$14.50
5/8	5	02-585	$17.50
5/8	5-1/4	02-58514	$17.50
5/8	5-1/2	02-58512	$17.50
5/8	5-3/4	02-58534	$17.50
5/8	6	02-586	$19.90
11/16	2-3/4	02-1116234	$11.50
11/16	3	02-11163	$11.50
11/16	3-1/4	02-1116314	$11.50
11/16	3-1/2	02-1116312	$11.50
11/16	3-3/4	02-1116334	$11.50
11/16	4	02-11164	$14.50
11/16	4-1/4	02-1116414	$14.50
11/16	4-1/2	02-1116412	$14.50
11/16	4-3/4	02-1116434	$14.50
11/16	5	02-11165	$17.50
11/16	5-1/4	02-1116514	$17.50
11/16	5-1/2	02-1116512	$17.50
11/16	5-3/4	02-1116534	$17.50
11/16	6	02-11166	$19.90
11/16	9	02-11169	$28.50
3/4	2-3/4	02-34234	$11.50
3/4	3	02-343	$11.50
3/4	3-1/4	02-34314	$11.50
3/4	3-1/2	02-34312	$11.50
3/4	3-3/4	02-34334	$11.50
3/4	4	02-344	$14.50
3/4	4-1/4	02-34414	$14.50
3/4	4-1/2	02-34412	$14.50
3/4	4-3/4	02-34434	$14.50
3/4	5	02-345	$17.50
3/4	5-1/4	02-34514	$17.50
3/4	5-1/2	02-34512	$17.50
3/4	5-3/4	02-34534	$17.50
3/4	6	02-346	$19.90
3/4	6-1/4	02-34614	$19.50
3/4	6-1/2	02-34612	$19.50
3/4	6-3/4	02-34634	$19.50
3/4	7	02-347	$22.50
3/4	7-1/4	02-34714	$22.50
3/4	7-1/2	02-34712	$22.50
3/4	7-3/4	02-34734	$22.50
3/4	8	02-348	$25.50
3/4	8-1/4	02-34814	$25.50
3/4	8-1/2	02-34812	$25.50
3/4	8-3/4	02-34834	$25.50
3/4	9	02-349	$28.50
13/16	2-3/4	02-1316234	$14.50
13/16	3	02-13163	$14.50
13/16	3-1/4	02-1316314	$14.50
13/16	3-1/2	02-1316312	$14.50
13/16	3-3/4	02-1316334	$14.50
13/16	4	02-13164	$17.65
13/16	4-1/4	02-1316414	$17.65
13/16	4-1/2	02-1316412	$17.65
13/16	4-3/4	02-1316434	$17.65
13/16	5	02-13165	$21.00
13/16	5-1/4	02-1316514	$21.00
13/16	5-1/2	02-1316512	$21.00
13/16	5-3/4	02-1316534	$21.00
13/16	6	02-13166	$25.50
13/16	6-1/4	02-1316614	$19.50
13/16	6-1/2	02-1316612	$19.50
13/16	6-3/4	02-1316634	$19.50
13/16	7	02-13167	$22.50
13/16	7-1/4	02-1316714	$22.50
13/16	7-1/2	02-1316712	$22.50
13/16	7-3/4	02-1316734	$22.50
13/16	8	02-13168	$25.50
13/16	8-1/4	02-1316814	$25.50
13/16	8-1/2	02-1316812	$25.50
13/16	8-3/4	02-1316834	$25.50
13/16	9	02-13169	$28.50
7/8	2-3/4	02-78234	$14.50
7/8	3	02-783	$14.50
7/8	3-1/4	02-78314	$14.50
7/8	3-1/2	02-78312	$14.50
7/8	3-3/4	02-78334	$14.50
7/8	4	02-784	$17.65
7/8	4-1/4	02-78414	$17.65
7/8	4-1/2	02-78412	$17.65
7/8	4-3/4	02-78434	$17.65
7/8	5	02-785	$21.00
7/8	5-1/4	02-78514	$21.00
7/8	5-1/2	02-78512	$21.00
7/8	5-3/4	02-78534	$21.00
7/8	6	02-786	$25.50
7/8	6-1/4	02-78614	$19.50
7/8	6-1/2	02-78612	$19.50
7/8	6-3/4	02-78634	$19.50
7/8	7	02-787	$22.50
7/8	7-1/4	02-78714	$22.50
7/8	7-1/2	02-78712	$22.50
7/8	7-3/4	02-78734	$22.50
7/8	8	02-788	$25.50
7/8	8-1/4	02-78814	$25.50
7/8	8-1/2	02-78812	$25.50
7/8	8-3/4	02-78834	$25.50
7/8	9	02-789	$28.50
15/16	2-3/4	02-1516234	$14.50
15/16	3	02-15163	$14.50
15/16	3-1/4	02-1516314	$14.50
15/16	3-1/2	02-1516312	$14.50
15/16	3-3/4	02-1516334	$14.50
15/16	4	02-15164	$17.65
15/16	4-1/4	02-1516414	$17.65
15/16	4-1/2	02-1516412	$17.65
15/16	4-3/4	02-1516434	$17.65
15/16	5	02-15165	$21.50
15/16	5-1/4	02-1516514	$21.50
15/16	5-1/2	02-1516512	$21.50
15/16	5-3/4	02-1516534	$21.50
15/16	6	02-15166	$25.50
15/16	6-1/4	02-1516614	$23.65
15/16	6-1/2	02-1516612	$23.65
15/16	6-3/4	02-1516634	$23.65
15/16	7	02-15167	$27.00
15/16	7-1/4	02-1516714	$27.00
15/16	7-1/2	02-1516712	$27.00
15/16	7-3/4	02-1516734	$27.00
15/16	8	02-15168	$30.50
15/16	8-1/4	02-1516814	$30.50
15/16	8-1/2	02-1516812	$30.50
15/16	8-3/4	02-1516834	$30.50
15/16	9	02-15169	$33.75
1	2	02-12A	$16.90
1	2-3/4	02-14810	$14.50
1	3	02-13	$14.50
1	3-1/4	02-1314	$14.50
1	3-1/2	02-1312	$14.50
1	3-3/4	02-1334	$14.50
1	4	02-14	$17.65
1	4-1/4	02-11310	$17.65
1	4-1/2	02-11710	$17.65
1	4-3/4	02-11910	$17.65
1	5	02-15	$21.50
1	5-1/4	02-1514	$21.50
1	5-1/2	02-1512	$21.50
1	5-3/4	02-1534	$21.50
1	6	02-16	$25.50
1	6-1/4	02-1614	$22.50
1	6-1/2	02-1612	$22.50
1	6-3/4	02-1634	$22.50
1	7	02-17	$28.50
1	7-1/4	02-1714	$28.50
1	7-1/2	02-1712	$28.50
1	7-3/4	02-1734	$28.50
1	8	02-18	$28.50
1	8-1/4	02-00216	$28.50
1	8-1/2	02-00217	$28.50
1	8-3/4	02-00218	$28.50
1	9	02-19	$31.90
1-1/8	2-3/4	02-118234	$17.50
1-1/8	3	02-1183	$17.50
1-1/8	3-1/4	02-118314	$17.50
1-1/8	3-1/2	02-118312	$17.50
1-1/8	3-3/4	02-118334	$17.50
1-1/8	4	02-1184	$21.50
1-1/8	4-1/4	02-118414	$21.50
1-1/8	4-1/2	02-118412	$21.50
1-1/8	4-3/4	02-118434	$21.50
1-1/8	5	02-1185	$25.50
1-1/8	5-1/4	02-118514	$25.50
1-1/8	5-1/2	02-118512	$25.50
1-1/8	5-3/4	02-118534	$25.50
1-1/8	6	02-1186	$25.90
1-1/8	6-1/4	02-118614	$25.50
1-1/8	6-1/2	02-118612	$25.50
1-1/8	6-3/4	02-118634	$25.50
1-1/8	7	02-1187	$28.50
1-1/8	7-1/4	02-118714	$28.50
1-1/8	7-1/2	02-118712	$28.50
1-1/8	7-3/4	02-118734	$28.50
1-1/8	8	02-1188	$31.90
1-1/8	8-1/4	02-118814	$31.90
1-1/8	8-1/2	02-118812	$31.90
1-1/8	8-3/4	02-118834	$31.90
1-1/8	9	02-1189	$36.00
1-1/4	2-3/4	02-114234	$17.50
1-1/4	3	02-1143	$17.50
1-1/4	3-1/4	02-114314	$17.50
1-1/4	3-1/2	02-114312	$17.50
1-1/4	3-3/4	02-114334	$17.50
1-1/4	4	02-1144	$21.50
1-1/4	4-1/4	02-114414	$21.50
1-1/4	4-1/2	02-114412	$21.50
1-1/4	4-3/4	02-114434	$21.50
1-1/4	5	02-1145	$25.50
1-1/4	5-1/4	02-114514	$25.50
1-1/4	5-1/2	02-114512	$25.50
1-1/4	5-3/4	02-114534	$25.50
1-1/4	6	02-1146	$25.90
1-1/4	6-1/4	02-114614	$27.50
1-1/4	6-1/2	02-114612	$27.50
1-1/4	6-3/4	02-114634	$27.50
1-1/4	7	02-1147	$31.50
1-1/4	7-1/4	02-114714	$31.50
1-1/4	7-1/2	02-114712	$31.50
1-1/4	7-3/4	02-114734	$31.50
1-1/4	8	02-1148	$35.50
1-1/4	8-1/4	02-114814	$35.50
1-1/4	8-1/2	02-114812	$35.50
1-1/4	8-3/4	02-114834	$35.50
1-1/4	9	02-1149	$39.50
1-1/2	2-3/4	02-112234	$17.50
1-1/2	3	02-1123	$17.50
1-1/2	3-1/2	02-112312	$17.50
1-1/2	3-3/4	02-112334	$17.50
1-1/2	4	02-1124	$21.50
1-1/2	5	02-1125	$25.50
1-1/2	6	02-1126	$25.90
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Overview
Reference Chart
Documents
Reviews
Q+A

Thousands of feet of S2S aircraft quality spruce are stocked in our Corona, CA. warehouse. Orders for spars, spruce kits and capstrip can usually be shipped within three weeks after receipt of order. Spars wider than 6" must be milled from 8" specially selected stock which requires a long and indefinite lead time. Prices on request. Spruce and tubing kits may be combined with plywood and other building supplies for a single truck delivery charge.

NOTICE
We supply only certified aircraft grade spruce. Do not accept lower grades of spruce for lower prices in your project. It is no bargain. Demand top quality. No Packaging Charges on Spruce

Metric Ordering Information
Spruce can be cut to metric sizes upon request only as special order, non cancelable and non refundable.
Using our current part numbers please select one size greater than desired and at check out in "Special Instructions" advise exact metric dimensions needed.

General Ordering Information
Our spars are available either S2S (surfaced 2 sides, top & bottom, with rough edges in 4" & 6" nominal width) or S4S (surfaced all 4 sides to thickness & width). Prices in table below are for S4S spars. If S2S is desired so builder can trim to exact width, specify S2S and use 4" or 6" width prices from table. Request quote on spar widths wider than 6". Spars for certificated aircraft such as Aeronca, Stearman, Taylorcraft and Piper are available and may be priced from the table. Since many of these early aircraft were “handmade”, the spars are often not uniform in size for a particular model. Therefore, the finished net dimensions should be specified when ordering replacement spars. Please price to nearest fraction. When ordering either spars or capstrip, designate the thickness first, then the width and length. Examples: 3/4"T x 4 1/4"W x 14’L spar; 1/4"T x 1/2"W x 5’L capstrip.

For additional technical information refer to a complete reprint of spruce specification MIL-S 6073 and plywood specification MIL-P-6070. See Documents.

Faster Delivery can be assured if guidelines regarding minimum acceptable lengths are provided. Orders are often delayed awaiting delivery of lumber to the even footage specified whereas shipment could be made if the minimum usable lengths were indicated. Example: 3/4" nominal 6" x 12' (131-1/2" min.)

Thick (Inches)	WIDTH (Inches)
Thick (Inches)	2-3/4	3	3-1/4	3-3/8	3-1/2	3-3/4	4
1/8	02-18234	02-183	02-18314	-	02-18312	02-18334	02-184
3/16	02-316234	02-3163	02-316314	-	02-316312	02-316334	02-3164
1/4	02-14234	02-143	02-14314	02-14338	02-14312	02-14334	02-144
5/16	02-516234	02-5163	02-516314	-	02-516312	02-516334	02-5164
3/8	02-38234	02-383	02-38314	-	02-38312	02-38334	02-384
1/2	02-12234	02-123	02-12314	-	02-12312	02-12334	02-124
5/8	02-58234	02-583	02-58314	-	02-58312	02-58334	02-584
11/16	02-1116234	02-11163	02-1116314	-	02-1116312	02-1116334	02-11164
3/4	02-34234	02-343	02-34314	02-34338	02-34312	02-34334	02-344
13/16	02-1316234	02-13163	02-1316314	-	02-1316312	02-1316334	02-13164
7/8	2-78234	02-783	02-78314	-	02-78312	02-78334	02-784
15/16	02-1516234	02-15163	02-1516314	-	02-1516312	02-1516334	02-15164
1	02-14810	02-13	02-1314	-	02-1312	02-1334	02-14
1-1/8	02-118234	02-1183	02-118314	-	02-118312	02-118334	02-1184
1-1/4	02-114234	02-1143	02-114314	-	02-114312	02-114334	02-1144
1-1/2	02-112234	02-1123	02-112314	-	02-112312	02-112334	02-1124
1-5/8	-	02-1583	-	-	-	02-158334	-

Thick (Inches)	WIDTH (Inches)
Thick (Inches)	4-1/4	4-1/2	4-3/4	5	5-1/4	5-1/2	5-3/4	6
1/8	02-18414	02-18412	02-18434	02-185	02-18514	02-18512	02-18534	02-186
3/16	02-316414	02-316412	02-316434	02-3165	02-316514	02-316512	02-316534	02-3166
1/4	02-14414	02-14412	02-14434	02-145	02-14514	02-14512	02-14534	02-146
5/16	02-516414	02-516412	02-516434	02-5165	02-516514	02-516512	02-516534	02-5166
3/8	02-38414	02-38412	02-38434	02-385	02-38514	02-38512	02-38534	02-386
1/2	02-12414	02-12412	02-12434	02-125	02-12514	02-12512	02-12534	02-126
5/8	02-58414	02-58412	02-58434	02-585	02-58514	02-58512	02-58534	02-586
11/16	02-1116414	02-1116412	02-1116434	02-11165	02-1116514	02-1116512	02-1116534	02-11166
3/4	02-34414	02-34412	02-34434	02-345	02-34514	02-34512	02-34534	02-346
13/16	02-1316414	02-1316412	02-1316434	02-13165	02-1316514	02-1316512	02-1316534	02-13166
7/8	02-78414	02-78412	02-78434	02-785	02-78514	02-78512	02-78534	02-786
15/16	02-1516414	02-1516412	02-1516434	02-15165	02-1516514	02-1516512	02-1516534	02-15166
1	02-11310	02-11710]	02-11910	02-15	02-1514	02-1512	02-1534	02-16
1-1/8	02-118414	02-118412	02-118434	02-1185	02-118514	02-118512	02-118534	02-1186
1-1/4	02-114414	02-114412	02-114434	02-1145	02-114514	02-114512	02-114534	02-1146
1-1/2	02-112414	02-112412	02-112434	02-1125	02-112514	02-112512	02-112534	02-1126
1-5/8	-	-	02-158434	02-1585	02-158514	02-158512	02-158534	-

Thick (Inches)	WIDTH (Inches)
Thick (Inches)	6-1/4	6-1/2	6-3/4	7	7-1/4	7-1/2
1/2	-	-	-	02-127	-	-
3/4	02-34614	02-34612	02-34634	02-347	02-34714	02-34712
13/16	02-1316614	02-1316612	02-1316634	02-13167	02-1316714	02-1316712
7/8	2-78614	02-78612	02-78634	02-787	02-78714	02-78712
15/16	02-1516614	02-1516612	02-1516634	02-15167	02-1516714	02-1516712
1	02-1614	02-1612	02-1634	02-17	02-1714	02-1712
1-1/8	02-118614	02-118612	02-118634	02-1187	02-118714	02-118712
1-1/4	02-114614	02-114612	02-114634	02-1147	02-114714	02-114712

Thick (Inches)	WIDTH (Inches)
Thick (Inches)	7-3/4	8	8-1/4	8-1/2	8-3/4	9
5/16	-	-	-	-	02-516834	02-5169
1/2	02-12414	02-12412	02-12434	02-125	02-12514	02-12512
11/16	-	-	-	-	-	02-11169
3/4	02-34734	02-348	02-34814	02-34812	02-34834	02-349
13/16	02-1316734	02-13168	02-1316814	02-1316812	02-1316834	02-13169
7/8	02-78734	02-788	02-78814	02-78812	02-78834	02-789
15/16	02-1516734	02-15168	02-1516814	02-1516812	02-1516834	02-15169
1	02-1734	02-18	02-00216	02-00217	02-00218	02-19
1-1/8	02-118734	02-1188	02-118814	02-118812	02-118834	02-1189
1-1/4	02-114734	02-1148	02-114814	02-114812	02-114834	02-1149

MIL-S-6073 & Plywood MIL-P-6070 Specification Sheet

by Richard S

06/05/2017

Excellent piece of Sitka Spruce. On my order comments I asked for a piece with nice straignt and even grain and they sure did deliver a beautiful piece of wood.

by Wayne C

01/07/2018

I was surprised when a my spar order didnâ€™t ship in a few days then I was REALLy surprised when I began checking on it. Turns out that spar quality spruce is getting very hard to get and almost every supplier except Aircraft Spruce has quit selling it. Now my concern turned to what the quality would be when it arrived. My concerns were unfounded as I was pleasantly surprised when I uncrated it, 10 excellent quality, strait, and exactly sized spars. Just a word of advice, if you are building with spruce order it early, it may take awhile to get top notch wood.

by David W

04/09/2018

My IA and I are very pleased with the quality and I appreciate all that Jim M in Ca and Amy and Christy in Ga to get the product to me in good order. Awesome effort by all
Thank you
David Waters

by David W

11/24/2018

This was well packaged and high quality wood, it will be sawed into 3/16 and 3/8 strips for the fuse on a Pawnee Brave/PA 36.

by Joseph H

04/21/2019

The wood product is perfect, The delivery is unaceptable. I was quoted 5 weeks, followed up several times, Did not receive any satisfaction until speaking to a rep at Sun n Fun - 11 weeks from order to delivery

by Elsie D

07/04/2019

Perfect as always!
M. Chisholm

by H. S

07/26/2019

Nice wood!

by Mark S

12/05/2019

Beautiful tight grain, absolutely blemish free. Perfect.

by John K

01/16/2020

A very nice piece of wood. Exactly what I needed for my project.

by Byron

03/28/2020

All the wood I have been getting these last few weeks is excellent. Very nice grain and milled nicely too.

by Gary B

04/06/2020

Excellent product. I ordered 2 pieces of 3/4 x 5 3/4 x 14 and 2 pieces of 3 3/4 x 14. Shipping was as they advised, 3 weeks, but the spars are flawless.

I don't see anywhere to add the length of the piece of wood? on the thickness and width.
After selecting the thickness and width from the drop down selectors, use the quantity box for length. This material is sold by the foot so the unit of measure for quantity is feet.

For potential customers who might be inquiring into the suitability of this wood as an affordable alternative to more expensive tonewood quality spruce (for musical instrument making), what species of spruce does this stock come from?
Sitka Grade A Spruce

Which way is the grain on these charts? Is it quarter sawn when the thickness is the vertical dimension and the width horizontal, or the other way around?
It is quarter sawn, with the grain vertical along the thickness of the wood.

What Mil Spec is this spruce?
All of our Spruce material is grade A Sitka Spruce and meets MIL-S-6073. The spar material is at the high end of this specification, and capstrip & longerons are at a lower end of this specification. The capstrip can be made with the spar quality material but must be requested at the time of order and will have special pricing.

Can you clarify the dimensions for ordering spar stock? If we order S2 the dimensions are nominal, but if S4 dimensions, they are exact? Thank you!
The thickness of spar material is as close as possible for both S2 and S4. The spar width for S2 is nominal, and S4 width is as close as possible, to the selected dimension.

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