The Washer,flat, cataloged under National Stock Number 5310-00-243-7537, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Div Huck Products Division. Government technical data includes 10 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-243-7537 |
| Primary Part Number | 0HDW7 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Huck International, Inc. Div Huck Products Division |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-F-14072 FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 302 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.216 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN |
| Thickness | 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 0HDW7 | Huck International, Inc. Div Huck Products Division (USA) |
| D747-8 | Huck International, Inc. Div Huck Products Division (USA) |
| D747-8 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 993336-3 | 5/2 Secondary reference U.S. Government activity |
| R98FB003 | 3/9 Design control — primary reference Mcdonnell Douglas Corp Mcdonnell Douglas Electronic Systems Co |
| D747-8 | 5/9 Secondary reference U.S. Government activity |
| A312A200-101 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5310-00-243-7537 is a Washer,flat, manufactured by Huck International, Inc. Div Huck Products Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-243-7537 has 3 manufacturer part numbers on file: 0HDW7 (Huck International, Inc. Div Huck Products Division), D747-8 (Huck International, Inc. Div Huck Products Division), D747-8 (Huck International, Inc).
Key specifications for 0HDW7: Surface Treatment Document and Classification: MIL-F-14072 FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.