The Nut,self-Locking,castellated,hex, cataloged under National Stock Number 5310-01-669-5034, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. 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 | 5310-01-669-5034 |
| Primary Part Number | 27FT-836 |
| Item Name | Nut,self-Locking,castellated,hex |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.375 INCHES MINIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Locking Feature | FREE-RUNNING ALL METAL DESIGN OR PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.188 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | CASTELLATED, HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 36 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED OR FLAT OR WASHER FACED |
| 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 |
|---|---|
| 27FT-836 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
NSN 5310-01-669-5034 is a Nut,self-Locking,castellated,hex, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-669-5034 has 1 manufacturer part number on file: 27FT-836 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 27FT-836: Width Across Flats: 0.375 INCHES MINIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.164 INCHES 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.