The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-964-6781, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bristol Industries, Llc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 26 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-964-6781 |
| Primary Part Number | BH00191-4 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Bristol Industries, Llc |
| Status | CANCELLED |
| Washer Thickness | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Temp Rating | 1200.0 FAHRENHEIT NOMINAL DEGF |
| Surface Treatment Document and Classification | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Width Across Flats | 0.369 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Precious Material | SILVER |
| Material | IRON ALLOY 660 OVERALL |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | SILVER OVERALL |
| Nominal Thread Size | 0.250 INCHES IN |
| Washer Outside Diameter | 0.443 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Thread Quantity Per Inch | 28 |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| R399P2 | Bristol Industries, Llc (USA) |
| R399P2 | Howmet Global Fastening Systems Inc (USA) |
| SL4905-428 | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| VN450B048 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| H19517-4 | Howmet Global Fastening Systems Inc (USA) |
| R399P2C | General Electric Company (USA) |
| BH00191-4 PRIMARY | Bristol Industries, Llc (USA) |
| VN450B048 | Howmet Global Fastening Systems Inc Div Torrance Operations (USA) |
| SA4993C-428 | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| R399P2S | General Electric Company (USA) |
| R399P2 | Howmet Global Fastening Systems Inc (USA) |
| Z4063-048 | Harvard Industries Inc (USA) |
| R399P2J | General Electric Company (USA) |
| R399P2 | Apollo Aerospace (USA) |
| Z1855-048 | Esna, Llc (USA) |
| R399P2 PRIMARY | Howmet Global Fastening Systems Inc Div Torrance Operations (USA) |
| VN450B048 | Howmet Global Fastening Systems Inc (USA) |
| R399P2 | General Electric Company (USA) |
| Z4063-048 | Esna, Llc (USA) |
| R399P2A | General Electric Company (USA) |
NSN 5310-00-964-6781 is a Nut,self-Locking,extended Washer, manufactured by Bristol Industries, Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.
NSN 5310-00-964-6781 has 26 cross-referenced part numbers: R399P2 (Bristol Industries, Llc), R399P2 (Howmet Global Fastening Systems Inc), SL4905-428 (Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems), VN450B048 (Fairchild Fasteners Europe - Vsd Gmbh), H19517-4 (Howmet Global Fastening Systems Inc) and 21 more.
There are 2 known substitutes for 5310-00-964-6781: 5310-00-685-1744, 5310-01-341-7518. Verify interchangeability with system specifications before substitution.
Key specifications for BH00191-4: Washer Thickness: 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN; Temp Rating: 1200.0 FAHRENHEIT NOMINAL DEGF; Surface Treatment Document and Classification: AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Width Across Flats: 0.369 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN. 17 total characteristics are documented in the Federal Logistics Information System.
NSN 5310-00-964-6781 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.