The Washer,flat, cataloged under National Stock Number 5310-01-615-4264, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-615-4264 |
| Primary Part Number | 98126A739 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Overall Diameter | 0.750 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 ROCKWELL B MINIMUM |
| Material Document and Classification | 18-8 STAINLESS STEEL IAW ASTM A240 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL PROPERTY CLASS 18.8 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.500 INCHES MINIMUM AND 0.511 INCHES MAXIMUM IN |
| Thickness | 0.058 INCHES MINIMUM AND 0.066 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 |
|---|---|
| 98126A739 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 5310-01-615-4264 is a Washer,flat, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-615-4264 has 1 manufacturer part number on file: 98126A739 (Mcmaster-Carr Supply Co).
Key specifications for 98126A739: Overall Diameter: 0.750 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN; Hardness Rating: 70.0 ROCKWELL B MINIMUM; Material Document and Classification: 18-8 STAINLESS STEEL IAW ASTM A240 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.