The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-00-453-9333, 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 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-453-9333 |
| Primary Part Number | 11631591 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.310 INCHES NOMINAL IN |
| Fastener Length | 3.000 INCHES NOMINAL IN |
| Shoulder Length | 0.840 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416,CL 1 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.840 INCHES NOMINAL IN |
| Shoulder Diameter | 0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.470 INCHES MINIMUM IN |
| Shoulder Shape | RIBBED FIRST SHOULDER |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Rib Length | 0.740 INCHES NOMINAL IN |
| Rib Minor Diameter | 0.835 INCHES MINIMUM AND 0.845 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Rib Major Diameter | 0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 4140 OR STEEL COMP 5140H OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNF |
| Rib Quantity | 25 |
| Head Diameter | 1.170 INCHES MINIMUM AND 1.180 INCHES MAXIMUM 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 |
|---|---|
| 11631591 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5306004539333 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 5306-00-453-9333 is a Bolt,ribbed Shoulder, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-453-9333 has 1 manufacturer part number on file: 11631591 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11631591: Head Height: 0.310 INCHES NOMINAL IN; Fastener Length: 3.000 INCHES NOMINAL IN; Shoulder Length: 0.840 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-416,CL 1 FED SPEC ALL TREATMENT RESPONSES OVERALL. 23 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.