The Screw,close Tolerance, cataloged under National Stock Number 5305-00-503-5591, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Nor-Cal Supply Co. Government technical data includes 22 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-00-503-5591 |
| Primary Part Number | NAS1131E2 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Nor-Cal Supply Co |
| 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 | 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN |
| Fastener Length | 0.386 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.251 INCHES MINIMUM AND 0.301 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1131 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Grip Diameter | 0.1365 INCHES MINIMUM AND 0.1375 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNJC |
| Head Diameter | 0.256 INCHES MINIMUM AND 0.270 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 |
|---|---|
| NAS1131E2 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| NAS1131E2 | Apcom Inc (USA) |
| NAS1131E2 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1131E2 PRIMARY | Nor-Cal Supply Co (USA) |
| NAS1131E2 | Hi-Shear Corporation (USA) |
| NAS1131E2 | Huck International, Inc (USA) |
| NAS1131E2 | Plastic and Metal Products Corporation (USA) |
| Reference | Meaning |
|---|---|
| NAS1131E2 | 5/9 Secondary reference Air Industries Co Inc |
| NAS1131E2 | 5/2 Secondary reference U.S. Government activity |
| NAS1131E2 | 5/9 Secondary reference U.S. Government activity |
| NAS1131E2 | 5/2 Secondary reference U.S. Government activity |
| NAS1131E2 | 5/2 Secondary reference U.S. Government activity |
| NAS1131E2 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| NAS1131E2 | 5/9 Secondary reference F and C Sales Inc |
| NAS1131E2 | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
NSN 5305-00-503-5591 is a Screw,close Tolerance, manufactured by Nor-Cal Supply Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-503-5591 has 7 manufacturer part numbers on file: NAS1131E2 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), NAS1131E2 (Apcom Inc), NAS1131E2 (Fastener Innovation Technology, Inc. Dba F I T), NAS1131E2 (Nor-Cal Supply Co), NAS1131E2 (Hi-Shear Corporation) and 2 more.
Key specifications for NAS1131E2: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN. 22 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.