The Bolt,machine, cataloged under National Stock Number 5306-00-752-1738, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-752-1738 |
| Primary Part Number | 7521738 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.375 INCHES NOMINAL IN |
| Fastener Length | 5.875 INCHES NOMINAL IN |
| Thread Length | 1.375 INCHES MINIMUM IN |
| Hardness Rating | 20.0 ROCKWELL C MINIMUM AND 28.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | QQ-S-624 /CANCELLED/ FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Minimum Tensile Strength | 110000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 2330 OR STEEL COMP 3130 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.625 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7521738 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 35207 | Meritor Heavy Vehicle Systems, Llc (USA) |
| 35207 | Meritor Industrial Products, Llc (USA) |
| Reference | Meaning |
|---|---|
| 914194X1 | 5/9 Secondary reference Sasco Inc Canadian Div |
| 465B1 | 5/9 Secondary reference Diamond Reo Truck Co |
| 5306007521738 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5306-00-752-1738 is a Bolt,machine, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-752-1738 has 3 manufacturer part numbers on file: 7521738 (U S Army Tank Automotive Command Amsta-Im-Mm), 35207 (Meritor Heavy Vehicle Systems, Llc), 35207 (Meritor Industrial Products, Llc).
3 possible matches (shared part number, not a government interchangeability claim): 5310-01-061-2547, 5133-01-095-4763, 3455-01-368-1518. Verify interchangeability with system specifications before substitution.
Key specifications for 7521738: Head Height: 0.375 INCHES NOMINAL IN; Fastener Length: 5.875 INCHES NOMINAL IN; Thread Length: 1.375 INCHES MINIMUM IN; Hardness Rating: 20.0 ROCKWELL C MINIMUM AND 28.0 ROCKWELL C MAXIMUM OVERALL. 15 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.