The Bolt,ring, cataloged under National Stock Number 5306-00-508-8289, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Cox Machine Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-508-8289 |
| Primary Part Number | 60-3746 |
| Item Name | Bolt,ring |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Cox Machine Inc |
| Status | ACTIVE |
| Ring Stock Diameter | 0.250 INCHES NOMINAL IN |
| Ring Inside Diameter | 1.380 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN |
| Thread Length | 0.480 INCHES NOMINAL IN |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Length | 1.600 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-6050 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.313 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Shoulder Diameter | 0.690 INCHES NOMINAL IN |
| Shoulder Thickness | 0.090 INCHES NOMINAL IN |
| Eye Inside Diameter | 0.312 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Eye Stock Thickness | 0.310 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 60-3746 PRIMARY | Cox Machine Inc (USA) |
| Reference | Meaning |
|---|---|
| 60-3746 | 5/2 Secondary reference U.S. Government activity |
| 60-3746-1 | 3/2 Design control — primary reference U.S. Government activity |
| 60-3746 | 3/2 Design control — primary reference U.S. Government activity |
| 60-3746 | 5/9 Secondary reference Bauch Mfg Co |
NSN 5306-00-508-8289 is a Bolt,ring, manufactured by Cox Machine Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-508-8289 has 1 manufacturer part number on file: 60-3746 (Cox Machine Inc).
1 possible match (shared part number, not a government interchangeability claim): 2920-01-194-3633. Verify interchangeability with system specifications before substitution.
Key specifications for 60-3746: Ring Stock Diameter: 0.250 INCHES NOMINAL IN; Ring Inside Diameter: 1.380 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN; Thread Length: 0.480 INCHES NOMINAL IN; Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL. 16 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.