The Nut,plain,extended Washer,round, cataloged under National Stock Number 5310-01-323-1605, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-323-1605 |
| Primary Part Number | 87229 |
| Item Name | Nut,plain,extended Washer,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Washer Outside Diameter | 2.000 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Washer Thickness | 0.3125 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Countersink Angle | 90.0 DEGREES NOMINAL WASHER |
| Drive Point Quantity | 2 |
| Thread Class | 3B |
| Thread Quantity Per Inch | 13 |
| 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 |
|---|---|
| 5VKJ72 PIECE 28 | Ashcroft Inc Dba Heise (USA) |
| 5VNM72 PIECE 28 | Ashcroft Inc Dba Heise (USA) |
| 87229 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 87229 | C/1 Advisory reference — outside the item-of-supply concept Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse |
NSN 5310-01-323-1605 is a Nut,plain,extended Washer,round, manufactured by Ashcroft Inc Dba Heise, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-323-1605 has 3 manufacturer part numbers on file: 5VKJ72 PIECE 28 (Ashcroft Inc Dba Heise), 5VNM72 PIECE 28 (Ashcroft Inc Dba Heise), 87229 (Ashcroft Inc Dba Heise).
Key specifications for 87229: Overall Height: 0.750 INCHES NOMINAL IN; Washer Outside Diameter: 2.000 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Washer Thickness: 0.3125 INCHES NOMINAL IN. 9 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.