The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-070-6870, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bristol Industries, Llc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-070-6870 |
| Primary Part Number | BH00163-6 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bristol Industries, Llc |
| Status | CANCELLED |
| Washer Outside Diameter | 0.678 INCHES NOMINAL IN |
| Width Across Flats | 0.500 INCHES NOMINAL IN |
| Thread Series | UNF |
| Washer Thickness | 0.107 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.388 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH METALLIC INSERT |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 824-1S1770 | Wheeler Fleet Solutions, Co. (USA) |
| 400379 | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| 1S1770 | Caterpillar Inc Div Caterpillar Defense (USA) |
| 019-90006-20 | Kovatch Corp. (USA) |
| BH00163-6 PRIMARY | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| 400379 | 5/9 Secondary reference Garrett Transportation I, Inc. |
| 8925752 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 400379 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
| 2GH799 | C/1 Advisory reference — outside the item-of-supply concept Oshkosh Corp |
| 400768-13 | 5/9 Secondary reference Garrett Transportation I, Inc. |
| 5310000706870 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 400768-0013 | 5/9 Secondary reference Garrett Transportation I, Inc. |
NSN 5310-00-070-6870 is a Nut,self-Locking,extended Washer, manufactured by Bristol Industries, Llc, classified under FSC 5310, Nuts and Washers. Status: cancelled.
NSN 5310-00-070-6870 has 5 manufacturer part numbers on file: 824-1S1770 (Wheeler Fleet Solutions, Co.), 400379 (Honeywell International Inc. Div Aerospace - Torrance), 1S1770 (Caterpillar Inc Div Caterpillar Defense), 019-90006-20 (Kovatch Corp.), BH00163-6 (Bristol Industries, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5915-00-097-6321, 5310-01-465-0056. Verify interchangeability with system specifications before substitution.
Key specifications for BH00163-6: Overall Height: 0.461 INCHES NOMINAL IN; Washer Outside Diameter: 0.678 INCHES NOMINAL IN; Width Across Flats: 0.500 INCHES NOMINAL IN; Thread Series: UNF. 11 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.
NSN 5310-00-070-6870 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.