The Bolt,u, cataloged under National Stock Number 5306-00-752-1228, 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 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-752-1228 |
| Primary Part Number | 7521228 |
| Item Name | Bolt,u |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Inside Distance Between Shanks | 2.531 INCHES NOMINAL IN |
| Thread Length | 0.937 INCHES NOMINAL IN |
| Hardness Rating | 253.0 BRINELL HULTGREN MINIMUM AND 319.0 BRINELL HULTGREN MAXIMUM OVERALL |
| Distance From Inside Center of Bend to Bolt End | 2.750 INCHES NOMINAL IN |
| Style Designator | SQUARE BEND |
| Material Document and Classification | SAE 3135H ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Features Provided | CASEHARDENED |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 7521228 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5306-00-752-1228 is a Bolt,u, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-752-1228 has 1 manufacturer part number on file: 7521228 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7521228: Inside Distance Between Shanks: 2.531 INCHES NOMINAL IN; Thread Length: 0.937 INCHES NOMINAL IN; Hardness Rating: 253.0 BRINELL HULTGREN MINIMUM AND 319.0 BRINELL HULTGREN MAXIMUM OVERALL; Distance From Inside Center of Bend to Bolt End: 2.750 INCHES NOMINAL IN. 13 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.