The Nut,self-Locking,double Hexagon, cataloged under National Stock Number 5310-01-099-6538, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-099-6538 |
| Primary Part Number | SS5086C08S |
| Item Name | Nut,self-Locking,double Hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Criticality Code Justification | FEAT |
| Nominal Thread Size | 0.500 INCHES IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| SS5086C08S PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| BH00505C8S | Bristol Industries, Llc (USA) |
| EWSN26AG | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| SS5086C08S | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 5310PL1999006 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| SS5086C08S | 5/9 Secondary reference Bristol Industries, Llc |
| BH00505 | 5/9 Secondary reference Bristol Industries, Llc |
NSN 5310-01-099-6538 is a Nut,self-Locking,double Hexagon, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-099-6538 has 3 manufacturer part numbers on file: SS5086C08S (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), BH00505C8S (Bristol Industries, Llc), EWSN26AG (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for SS5086C08S: Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Criticality Code Justification: FEAT; Nominal Thread Size: 0.500 INCHES IN; Special Features: CRITICAL SAFETY ITEM (CSI). 5 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.