The Screw,close Tolerance, cataloged under National Stock Number 5305-00-939-0889, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Apcom Inc. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-939-0889 |
| Primary Part Number | NAS1134C2 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Apcom Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| Fastener Length | 0.426 INCHES MINIMUM AND 0.456 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.316 INCHES MINIMUM IN |
| Hardness Rating | 248.0 BRINELL STANDARD MINIMUM AND 321.0 BRINELL STANDARD MAXIMUM OVERALL |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1134 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.125 INCHES NOMINAL IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.424 INCHES MINIMUM AND 0.492 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 |
|---|---|
| NAS1134C2 | Nor-Cal Supply Co (USA) |
| NAS1134C2 PRIMARY | Apcom Inc (USA) |
| NAS1134C2 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| NAS1134C2 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1134C2 PRIMARY | Huck International, Inc (USA) |
| NAS1134C2 PRIMARY | Hi-Shear Corporation (USA) |
| NAS1134C2 | Plastic and Metal Products Corporation (USA) |
| Reference | Meaning |
|---|---|
| NAS1134C2 | 5/9 Secondary reference Air Industries Co Inc |
| NAS1134C2 | 5/9 Secondary reference F and C Sales Inc |
| NAS1134C2 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1134C2 | 5/9 Secondary reference U.S. Government activity |
| NAS1134C2 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1134C2 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| NAS1134C2 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1134C2 | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
NSN 5305-00-939-0889 is a Screw,close Tolerance, manufactured by Apcom Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-939-0889 has 7 manufacturer part numbers on file: NAS1134C2 (Nor-Cal Supply Co), NAS1134C2 (Apcom Inc), NAS1134C2 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), NAS1134C2 (Fastener Innovation Technology, Inc. Dba F I T), NAS1134C2 (Huck International, Inc) and 2 more.
Key specifications for NAS1134C2: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN. 23 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.