The Screw,close Tolerance, cataloged under National Stock Number 5305-00-145-1007, 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 22 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-00-145-1007 |
| Primary Part Number | NAS1125-27 |
| 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 0.183 INCHES MAXIMUM IN |
| Fastener Length | 2.048 INCHES MINIMUM AND 2.078 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.350 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 5TH MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM IN |
| Grip Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE 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 | 24 |
| Material | STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.429 INCHES MINIMUM AND 0.438 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 |
|---|---|
| NAS1125-27 PRIMARY | Apcom Inc (USA) |
| NAS1125-27 PRIMARY | Hi-Shear Corporation (USA) |
| NAS1125-27 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| NAS1125-27 PRIMARY | King Bag & Manufacturing Co (USA) |
| NAS1125-27 PRIMARY | Huck International, Inc (USA) |
| NAS1125-27 | Nor-Cal Supply Co (USA) |
| MAS1125-27 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1125-27 PRIMARY | Qualified Air Components Inc. (USA) |
| Reference | Meaning |
|---|---|
| NAS1125-27 | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| NAS1125-27 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1125-27 | 5/9 Secondary reference Air Industries Co Inc |
| NAS1125-27 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1125-27 | 5/9 Secondary reference U.S. Government activity |
| NAS1125027 | 5/9 Secondary reference F and C Sales Inc |
| NAS1125-27 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| NAS1125-27 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-145-1007 is a Screw,close Tolerance, manufactured by Apcom Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-145-1007 has 8 manufacturer part numbers on file: NAS1125-27 (Apcom Inc), NAS1125-27 (Hi-Shear Corporation), NAS1125-27 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), NAS1125-27 (King Bag & Manufacturing Co), NAS1125-27 (Huck International, Inc) and 3 more.
Key specifications for NAS1125-27: 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 0.183 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.