The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-00-798-8934, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Meritor Heavy Vehicle Systems, Llc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-798-8934 |
| Primary Part Number | 20X674 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| Head Height | 0.312 INCHES NOMINAL IN |
| Fastener Length | 2.469 INCHES NOMINAL IN |
| Shoulder Length | 0.906 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.125 INCHES NOMINAL IN |
| Shoulder Diameter | 0.835 INCHES MINIMUM AND 0.870 INCHES MINIMUM FIRST SHOULDER IN |
| Thread Length | 1.000 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 18.0 ROCKWELL C MINIMUM AND 28.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AISI ASSN STD ALL MATERIAL RESPONSES OR SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Rib Length | 0.781 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Features Provided | CASEHARDENED |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Rib Major Diameter | 0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN |
| Nonstandard Thread Pitch Diameter | +0.7054 TO 0.7094 INCHES IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 3120 OR STEEL COMP 8720 OVERALL |
| Thread Series Designator | UNF |
| Rib Quantity | 25 |
| Head Diameter | 1.188 INCHES MINIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5306-00-798-8934 is a Bolt,ribbed Shoulder, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-798-8934 has 2 manufacturer part numbers on file: 20X674 (Meritor Industrial Products, Llc), 20X674 (Meritor Heavy Vehicle Systems, Llc).
Key specifications for 20X674: Head Height: 0.312 INCHES NOMINAL IN; Fastener Length: 2.469 INCHES NOMINAL IN; Shoulder Length: 0.906 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 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.