The Screw,machine, cataloged under National Stock Number 5305-01-021-9140, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Pattonair Usa Inc Dba Incora Div Uniseal Division. Government technical data includes 15 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 | 5305-01-021-9140 |
| Primary Part Number | AB2660A9 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Pattonair Usa Inc Dba Incora Div Uniseal Division |
| Status | ACTIVE |
| Head Height | 0.068 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.547 INCHES MINIMUM AND 0.592 INCHES MAXIMUM IN |
| Thread Length | 0.497 INCHES MINIMUM AND 0.592 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Features Provided | SHIM AND O RING |
| Head Style | BUTTON |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 416 OR STEEL COMP 416SE OR STEEL COMP 420F OR STEEL COMP 420FSE OR STEEL COMP 430F OR STEEL COMP 430FSE OR STEEL COMP 440F OR STEEL COMP 440FSE |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.266 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| AB2660A9 PRIMARY | Pattonair Usa Inc Dba Incora Div Uniseal Division (USA) |
NSN 5305-01-021-9140 is a Screw,machine, manufactured by Pattonair Usa Inc Dba Incora Div Uniseal Division, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-021-9140 has 1 manufacturer part number on file: AB2660A9 (Pattonair Usa Inc Dba Incora Div Uniseal Division).
Key specifications for AB2660A9: Head Height: 0.068 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 0.547 INCHES MINIMUM AND 0.592 INCHES MAXIMUM IN; Thread Length: 0.497 INCHES MINIMUM AND 0.592 INCHES MAXIMUM IN. 15 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.