The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-329-8202, 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 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-329-8202 |
| Primary Part Number | 73783CM-2012 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 1.915 INCHES MAXIMUM IN |
| Width Across Flats | 1.364 INCHES MINIMUM AND 1.383 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Washer Thickness | 0.090 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.125 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | CASTELLATED HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | IRON ALLOY 660 OVERALL |
| 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 |
|---|---|
| BH187-20 | Bristol Industries, Llc (USA) |
| 03A187-20L | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| 73783CM-2012 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
NSN 5310-01-329-8202 is a Nut,self-Locking,extended Washer, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-329-8202 has 3 manufacturer part numbers on file: BH187-20 (Bristol Industries, Llc), 03A187-20L (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), 73783CM-2012 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 73783CM-2012: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.625 INCHES NOMINAL IN; Washer Outside Diameter: 1.915 INCHES MAXIMUM IN; Width Across Flats: 1.364 INCHES MINIMUM AND 1.383 INCHES MAXIMUM IN. 15 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.