The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-00-569-9018, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-569-9018 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Fastener Length | 6.062 INCHES NOMINAL IN |
| Shoulder Length | 1.250 INCHES MINIMUM FIRST SHOULDER IN |
| Shoulder Length | 3.250 INCHES MINIMUM SECOND SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.349 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.875 INCHES MINIMUM AND 0.890 INCHES MAXIMUM SECOND SHOULDER IN |
| Shoulder Diameter | 0.971 INCHES MINIMUM AND 0.976 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.390 INCHES MINIMUM AND 1.410 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Hardness Rating | 223.0 BRINELL HULTGREN MINIMUM AND 277.0 BRINELL HULTGREN MAXIMUM OVERALL |
| Rib Length | 0.560 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | LEFT-HAND |
| Rib Major Diameter | 0.998 INCHES MINIMUM AND 1.006 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 5135 OR STEEL COMP 5140 OR STEEL COMP 8637 OR STEEL COMP 8740 OR STEEL COMP 4135 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8640 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 1.310 INCHES MINIMUM AND 1.350 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 |
| Reference | Meaning |
|---|---|
| KC5418 | 5/9 Secondary reference Diamond Reo Truck Co |
| 7411182 | 5/1 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| MS51947-1 | 2/2 Government specification standardization U.S. Government activity |
| 5306005699018 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 20X411 | 5/9 Secondary reference Meritor Heavy Vehicle Systems, Llc |
NSN 5306-00-569-9018 is a Bolt,ribbed Shoulder, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-569-9018: Head Height: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN; Fastener Length: 6.062 INCHES NOMINAL IN; Shoulder Length: 1.250 INCHES MINIMUM FIRST SHOULDER IN; Shoulder Length: 3.250 INCHES MINIMUM SECOND SHOULDER IN. 22 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.