As listed
| Field | Value |
|---|---|
| Seller | Aircraft Spruce |
| Material | 4130, normalized |
| Specification | MIL-T-6736 |
| Sizes | 14, from 1/2" × 1/2" to 1" × 1-3/4" |
| Lengths | Cut lengths up to 12 ft |
| Listing checked | 2026-09-30 |
Taken from Aircraft Spruce's product page on 2026-09-30. Where the listing does not state a figure, this table does not either.
What it is for
Round tube in the same alloy: 4130 round tubing. Streamline: 4130 streamline.
Test reports are available for a minimum charge per order.
Sizes listed
| Size (in.) | Wall (in.) | Weight per ft (lb) | Part No. |
|---|---|---|---|
| 1/2 x 1/2 | .035 | 0.221 | 03-12200 |
| 1/2 x 1 | .065 | 0.606 | 03-12350 |
| 5/8 x 5/8 | .035 | 0.281 | 03-12400 |
| 5/8 x 5/8 | .049 | 0.423 | 03-12500 |
| 5/8 x 5/8 | .065 | 0.388 | 03-12600 |
| 3/4 x 3/4 | .035 | 0.340 | 03-12700 |
| 3/4 x 3/4 | .049 | 0.467 | 03-12800 |
| 3/4 x 3/4 | .065 | 0.606 | 03-13000 |
| 7/8 x 7/8 | .065 | 0.716 | 03-13300 |
| 1 x 1 | .035 | 0.567 | 03-13400 |
| 1 x 1 | .049 | 0.634 | 03-13500 |
| 1 x 1 | .065 | 0.827 | 03-13700 |
| 3/4 x 1-1/2 | .049 | 0.906 | 03-13900 |
| 1 x 1-3/4 | .065 | 1.158 | 03-13950 |
As listed by Aircraft Spruce on 2026-09-30. Check the live listing before ordering: stock and part numbers change.
Where to buy
The link opens Aircraft Spruce's own page for this item, so the price and stock you see are theirs and current. We do not copy prices.
The Aviation Point links to third-party manufacturer and distributor websites. We may earn a commission on purchases made through these links, at no additional cost to you. The Aviation Point has no partnership or affiliate agreement with Aircraft Spruce, and these links carry no tracking parameters.
Sources
- Aircraft Spruce — 4130 Airframe Square & Rectangular Tubing MIL-T-6736 Normalized — product listing, checked 2026-09-30.