The Anchor Screw,drive, cataloged under National Stock Number 5305-01-377-7955, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Grainger W W Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-377-7955 |
| Primary Part Number | 4AK99 |
| Item Name | Anchor Screw,drive |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Grainger W W Inc |
| Status | ACTIVE |
| General Characteristics Item Description | PHILLIPS FLAT HEAD; USED AS A MASONRY FASTENING SYSTEM; SCREW LENGTH 1-3/4 INCHES, SCREW DIA IS 1/4 INCH 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 |
|---|---|
| 4AK99 | Grainger W W Inc (USA) |
| Reference | Meaning |
|---|---|
| 3185407 | 3/2 Design control — primary reference U.S. Government activity |
| PF4-134 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-377-7955 is a Anchor Screw,drive, manufactured by Grainger W W Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-377-7955 has 1 manufacturer part number on file: 4AK99 (Grainger W W Inc).
Key specifications for 4AK99: General Characteristics Item Description: PHILLIPS FLAT HEAD; USED AS A MASONRY FASTENING SYSTEM; SCREW LENGTH 1-3/4 INCHES, SCREW DIA IS 1/4 INCH IN. 1 specification is 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.