The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-00-419-9544, 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 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-419-9544 |
| Primary Part Number | 11643631-1 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.380 INCHES NOMINAL IN |
| Rib Included Angle | 28.0 DEGREES NOMINAL |
| Fastener Length | 2.810 INCHES NOMINAL IN |
| Shoulder Length | 0.420 INCHES NOMINAL FIRST SHOULDER IN |
| Distance From Centerline to Flat | 0.510 INCHES NOMINAL IN |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.230 INCHES NOMINAL IN |
| Shoulder Diameter | 0.781 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 1.150 INCHES NOMINAL IN |
| Shoulder Shape | RIBBED FIRST SHOULDER |
| Hardness Rating | 33.0 ROCKWELL C NOMINAL OVERALL |
| Material Document and Classification | QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Rib Length | 0.420 INCHES NOMINAL IN |
| Rib Minor Diameter | 0.709 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | DEE |
| Thread Direction | RIGHT-HAND |
| Rib Major Diameter | 0.781 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNF |
| Rib Quantity | 1 |
| Head Diameter | 1.250 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 |
|---|---|
| SW 5306-004199544 | CAGE A3NJJ |
| 11643631-1 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5306004199544 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 5306004199544 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5306-00-419-9544 is a Bolt,ribbed Shoulder, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-419-9544 has 2 manufacturer part numbers on file: SW 5306-004199544, 11643631-1 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11643631-1: Head Height: 0.380 INCHES NOMINAL IN; Rib Included Angle: 28.0 DEGREES NOMINAL; Fastener Length: 2.810 INCHES NOMINAL IN; Shoulder Length: 0.420 INCHES NOMINAL FIRST SHOULDER IN. 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.