The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-00-404-0782, 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 24 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 | 5306-00-404-0782 |
| Primary Part Number | 11640931 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.200 INCHES NOMINAL IN |
| Fastener Length | 1.595 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN |
| Shoulder Length | 0.541 INCHES MINIMUM AND 0.551 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | MIL-P-16232,TY M,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.060 INCHES NOMINAL IN |
| Shoulder Diameter | 0.589 INCHES MINIMUM FIRST SHOULDER IN |
| Thread Length | 0.978 INCHES MINIMUM AND 1.018 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 52.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Rib Length | 0.541 INCHES MINIMUM AND 0.551 INCHES MAXIMUM IN |
| Rib Minor Diameter | 0.589 INCHES MINIMUM AND 0.593 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Features Provided | CASEHARDENED |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Rib Major Diameter | 0.612 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN |
| Surface Treatment | PHOSPHATE MANGANESE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 1022 OR STEEL COMP 1026 OR STEEL COMP 1030 OVERALL |
| Thread Series Designator | UNF |
| Rib Quantity | 39 |
| Head Diameter | 1.120 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 |
|---|---|
| 11640931 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5306-00-404-0782 is a Bolt,ribbed Shoulder, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-404-0782 has 1 manufacturer part number on file: 11640931 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11640931: Head Height: 0.200 INCHES NOMINAL IN; Fastener Length: 1.595 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN; Shoulder Length: 0.541 INCHES MINIMUM AND 0.551 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: MIL-P-16232,TY M,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 24 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.