The Bolt,ring, cataloged under National Stock Number 5306-01-118-7891, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Crosby Group Llc Dba the Crosby Group. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-118-7891 |
| Primary Part Number | G-257-3/8X2-1/2 |
| Item Name | Bolt,ring |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Crosby Group Llc Dba the Crosby Group |
| Status | ACTIVE |
| Ring Stock Diameter | 0.375 INCHES NOMINAL IN |
| Ring Inside Diameter | 2.000 INCHES NOMINAL IN |
| Thread Length | 1.500 INCHES NOMINAL IN |
| Shank Length | 2.500 INCHES NOMINAL IN |
| Style Designator | ROUND, CLOSED W/SHOULDER |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Eye Inside Diameter | 2.000 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL 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 |
|---|---|
| G-257-3/8X2-1/2 PRIMARY | The Crosby Group Llc Dba the Crosby Group (USA) |
NSN 5306-01-118-7891 is a Bolt,ring, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-118-7891 has 1 manufacturer part number on file: G-257-3/8X2-1/2 (The Crosby Group Llc Dba the Crosby Group).
Key specifications for G-257-3/8X2-1/2: Ring Stock Diameter: 0.375 INCHES NOMINAL IN; Ring Inside Diameter: 2.000 INCHES NOMINAL IN; Thread Length: 1.500 INCHES NOMINAL IN; Shank Length: 2.500 INCHES NOMINAL IN. 12 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.