The Screw,close Tolerance, cataloged under National Stock Number 5305-01-494-0616, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-494-0616 |
| Primary Part Number | 3M1262C4-3-6A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 0.543 INCHES MINIMUM AND 0.573 INCHES MAXIMUM IN |
| Thread Length | 0.372 INCHES NOMINAL IN |
| Spline Major Diameter | 0.1540 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.176 INCHES MINIMUM AND 0.196 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | TORX |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.358 INCHES MINIMUM AND 0.365 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 |
|---|---|
| 3M1262C4-3-6A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| TX1024C4-3-6A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1024C4-3-6A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| TX1024C4-3-6A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 11853C4-3-6A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1262C4-3-6A | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| TX1024C4-3-6A | Howmet Global Fastening Systems Inc (USA) |
| TX1024C4-3-6A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| TX1024C4-3-6A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1262C4-3-6A PRIMARY | The Boeing Company Div Defense (USA) |
| TX1024C4-3-6A | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| TX1024C4-3-6A | 5/2 Secondary reference U.S. Government activity |
| TX1024C4-3-6A | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-494-0616 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-494-0616 has 11 manufacturer part numbers on file: 3M1262C4-3-6A (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), TX1024C4-3-6A (Sps Technologies, Llc Dba PB Fasteners), TX1024C4-3-6A (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), TX1024C4-3-6A (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 11853C4-3-6A (Reid Products Inc. Dba Reid Products Inc) and 6 more.
Key specifications for 3M1262C4-3-6A: Fastener Length: 0.543 INCHES MINIMUM AND 0.573 INCHES MAXIMUM IN; Thread Length: 0.372 INCHES NOMINAL IN; Spline Major Diameter: 0.1540 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN. 16 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.