The Bolt,ring, cataloged under National Stock Number 5306-00-131-7290, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 22 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 | 5306-00-131-7290 |
| Primary Part Number | SS5080-1-16H |
| Item Name | Bolt,ring |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Ring Stock Diameter | 0.250 INCHES NOMINAL IN |
| Ring Inside Diameter | 1.250 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Thread Length | 0.532 INCHES NOMINAL IN |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.076 INCHES NOMINAL FIRST HOLE IN |
| Shank Length | 1.844 INCHES NOMINAL IN |
| Style Designator | ROUND, CLOSED W/SHOULDER |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Distance From Center of Eye to Shank End | 2.438 INCHES NOMINAL IN |
| Shoulder Diameter | 0.313 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN |
| Shoulder Thickness | 0.094 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 150000 POUNDS PER SQUARE INCH LBS |
| Eye Inside Diameter | 0.313 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Eye Stock Thickness | 0.188 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 4130 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 |
|---|---|
| SS5080-1-16H PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5306-00-131-7290 is a Bolt,ring, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-131-7290 has 1 manufacturer part number on file: SS5080-1-16H (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for SS5080-1-16H: Ring Stock Diameter: 0.250 INCHES NOMINAL IN; Ring Inside Diameter: 1.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL; Thread Length: 0.532 INCHES NOMINAL 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.