The Screw,tapping, cataloged under National Stock Number 5305-01-026-4951, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-026-4951 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Extended Washer Thickness | 0.019 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN |
| Head Height | 0.124 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN |
| Fastener Length | 0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CLB FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Extended Washer Diameter | 0.364 INCHES MINIMUM AND 0.414 INCHES MAXIMUM IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Width Between Flats | 0.050 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MS51869-13 | 2/2 Government specification standardization U.S. Government activity |
| 934748 | C/1 Advisory reference — outside the item-of-supply concept Kalmar AC Inc |
| SK-2201-16 | 5/1 Secondary reference Gse Management Co |
NSN 5305-01-026-4951 is a Screw,tapping, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-026-4951: Extended Washer Thickness: 0.019 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN; Head Height: 0.124 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN; Fastener Length: 0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CLB FED SPEC ALL TREATMENT RESPONSES OVERALL. 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.