The Bolt,u, cataloged under National Stock Number 5306-00-207-4931, 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 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-207-4931 |
| Primary Part Number | 8331858 |
| 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 | 2.562 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | TT-P-636 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 2.125 INCHES MINIMUM IN |
| Hardness Rating | 269.0 BRINELL STANDARD MINIMUM AND 302.0 BRINELL STANDARD MAXIMUM OVERALL |
| Distance From Inside Center of Bend to Bolt End | 12.000 INCHES NOMINAL IN |
| Style Designator | SQUARE BEND |
| Material Document and Classification | SAE 4140 ASSN STD 1ST MATERIAL RESPONSE OR 41885,TS8645 OR TS8647 OR TS4140 OR TS4142 OR TS4145 MFR REF 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PRIMER OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 4140 OR 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 |
|---|---|
| 8331858 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 684S3 | 5/9 Secondary reference Diamond Reo Truck Co |
| 915978 | 3/9 Design control — primary reference Sasco Inc Canadian Div |
NSN 5306-00-207-4931 is a Bolt,u, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-207-4931 has 1 manufacturer part number on file: 8331858 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8331858: Inside Distance Between Shanks: 2.562 INCHES NOMINAL IN; Surface Treatment Document and Classification: TT-P-636 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 2.125 INCHES MINIMUM IN; Hardness Rating: 269.0 BRINELL STANDARD MINIMUM AND 302.0 BRINELL STANDARD MAXIMUM OVERALL. 14 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.