The Screw,assembled Washer, cataloged under National Stock Number 5305-01-662-0137, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 21 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 | 5305-01-662-0137 |
| Primary Part Number | 90317A230 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Extended Washer Thickness | 0.75 MILLIMETERS NOMINAL MM |
| Head Height | 4.6 MILLIMETERS NOMINAL MM |
| Extended Washer Diameter | 12.15 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.0 |
| Primary Washer Outside Diameter | 12.15 MILLIMETERS NOMINAL MM |
| Thread Length | 12.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 70.0 ROCKWELL B NOMINAL OVERALL |
| Nominal Thread Diameter | 6.0 MILLIMETERS MM |
| Features Provided | LOCK WASHER |
| Head Style | PAN |
| Primary Washer Style | FLAT |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.75 MILLIMETERS NOMINAL MM |
| Head Length | 12.0 MILLIMETERS NOMINAL MM |
| Color | SILVER OVERALL |
| Minimum Tensile Strength | 70000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CRUCIFORM RIBBED |
| Thread Class | 6G G |
| Material | STEEL CORROSION RESISTING OVERALL |
| Washer Quantity | 1 |
| Head Diameter | 12.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 90317A230 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 5305-01-662-0137 is a Screw,assembled Washer, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-662-0137 has 1 manufacturer part number on file: 90317A230 (Mcmaster-Carr Supply Co).
Key specifications for 90317A230: Extended Washer Thickness: 0.75 MILLIMETERS NOMINAL MM; Head Height: 4.6 MILLIMETERS NOMINAL MM; Extended Washer Diameter: 12.15 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.0. 21 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.