The Screw,machine, cataloged under National Stock Number 5305-01-221-3491, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-221-3491 |
| Primary Part Number | AB2600A5 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Pattonair Usa Inc Dba Incora Div Uniseal Division |
| Status | ACTIVE |
| Head Height | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Fastener Length | 0.297 INCHES MINIMUM AND 0.342 INCHES MAXIMUM IN |
| Thread Length | 0.247 INCHES MINIMUM AND 0.342 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | WATERTIGHT |
| Thread Direction | RIGHT-HAND |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.270 INCHES MINIMUM AND 0.285 INCHES MAXIMUM 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 |
|---|---|
| AB2600A5 PRIMARY | Pattonair Usa Inc Dba Incora Div Uniseal Division (USA) |
| Reference | Meaning |
|---|---|
| AB2600-A5 | 5/9 Secondary reference Fl Aerospace Corp Janitrol Aero Div/general Design |
NSN 5305-01-221-3491 is a Screw,machine, manufactured by Pattonair Usa Inc Dba Incora Div Uniseal Division, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-221-3491 has 1 manufacturer part number on file: AB2600A5 (Pattonair Usa Inc Dba Incora Div Uniseal Division).
Key specifications for AB2600A5: Head Height: 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN; Fastener Length: 0.297 INCHES MINIMUM AND 0.342 INCHES MAXIMUM IN; Thread Length: 0.247 INCHES MINIMUM AND 0.342 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.112 INCHES IN. 12 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.