The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-928-9672, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Delbert Blinn Co Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-928-9672 |
| Primary Part Number | HNW-557 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Delbert Blinn Co Inc |
| Status | ACTIVE |
| Width Across Flats | 0.241 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Hardness Rating | 80.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | ASTM A563,GRADE A ASSN STD SINGLE MATERIAL RESPONSE OR SAE J995,GRADE 2,UNS K05802 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.112 INCHES IN |
| Specification/standard Data | 81348-FF-N-836 GOVERNMENT SPECIFICATION AND 96906-MS20341/CANCELED/ GOVERNMENT STANDARD |
| Nondefinitive Spec/std Data | 2 TYPE AND 13 STYLE AND 4-40UNC SIZE |
| Nut Height | 0.087 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 40 |
| Material | STEEL OVERALL |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| HNW-557 PRIMARY | The Delbert Blinn Co Inc (USA) |
| 404 596 PRIMARY | Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| FF-N-836 | 4/1 Identification reference U.S. Government activity |
| MS20341-4S | 5/9 Secondary reference U.S. Government activity |
| 5310PL1386253 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| HN-4-40 | 5/9 Secondary reference The Delbert Blinn Co Inc |
NSN 5310-00-928-9672 is a Nut,plain,hexagon, manufactured by The Delbert Blinn Co Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-928-9672 has 2 manufacturer part numbers on file: HNW-557 (The Delbert Blinn Co Inc), 404 596 (Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company).
Key specifications for HNW-557: Width Across Flats: 0.241 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC); Hardness Rating: 80.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM. 16 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.