The Screw,tapping, cataloged under National Stock Number 5305-01-690-8560, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Positronic Industries Inc Div Amphenol Military Aerospace Operations. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-690-8560 |
| Primary Part Number | A4546-7-7-4 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Positronic Industries Inc Div Amphenol Military Aerospace Operations |
| Status | ACTIVE |
| Fastener Length | 7.93 MILLIMETERS NOMINAL MM |
| Nonmachine Thread Style | BLUNT (TYPE TT) |
| Head Style | PAN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE III |
| Material | STEEL CORROSION RESISTING OVERALL |
| Head Diameter | 3.94 MILLIMETERS MINIMUM AND 4.24 MILLIMETERS MAXIMUM 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 |
|---|---|
| A4546-7-7-4 PRIMARY | Positronic Industries Inc Div Amphenol Military Aerospace Operations (USA) |
| Reference | Meaning |
|---|---|
| ASK21018- | D/9 Drawing number reference only Positronic Industries Inc Div Amphenol Military Aerospace Operations |
NSN 5305-01-690-8560 is a Screw,tapping, manufactured by Positronic Industries Inc Div Amphenol Military Aerospace Operations, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-690-8560 has 1 manufacturer part number on file: A4546-7-7-4 (Positronic Industries Inc Div Amphenol Military Aerospace Operations).
Key specifications for A4546-7-7-4: Fastener Length: 7.93 MILLIMETERS NOMINAL MM; Nonmachine Thread Style: BLUNT (TYPE TT); Head Style: PAN; Special Features: 2-28 TRIPLASK II TRILOBULAR THREADS OR EQUIVILENT. 7 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.