The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-141-7147, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-00-141-7147 |
| Primary Part Number | NS1191-4P6 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, 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 | 0.133 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Fastener Length | 0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.273 INCHES MINIMUM AND 0.375 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 | 0.250 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1191 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Locking Feature | PATCH OR PELLET OR STRIP THREADS |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| 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 | 0.367 INCHES MINIMUM AND 0.375 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 |
|---|---|
| NS1191-4P6 PRIMARY | Huck International, Inc (USA) |
| NAS1191-4P6 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| NAS1191-4P6 | Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc (USA) |
| NAS1191-4P6 PRIMARY | Nd Industries Inc Div Eastern Division (USA) |
| NAS1191-4P6 | Nor-Cal Supply Co (USA) |
| NAS1191-4P6 PRIMARY | Long-Lok Llc (USA) |
| NAS1191-4P6 PRIMARY | Apcom Inc (USA) |
| NAS1191-4P6 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| NS1191-4P6 | 5/9 Secondary reference U.S. Government activity |
| NAS1191-4P6 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1191-4P6 | 5/9 Secondary reference The Gregory Manufacturing Company |
| NAS1191-4P6 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1191-4P6 | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| LK1191-4P6 | 5/9 Secondary reference Torkon Fastener Corp |
| NAS1191-4P6 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| NAS1191-4P6 | 5/9 Secondary reference Air Industries Co Inc |
NSN 5305-00-141-7147 is a Screw,cap,socket Head, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-141-7147 has 8 manufacturer part numbers on file: NS1191-4P6 (Huck International, Inc), NAS1191-4P6 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), NAS1191-4P6 (Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc), NAS1191-4P6 (Nd Industries Inc Div Eastern Division), NAS1191-4P6 (Nor-Cal Supply Co) and 3 more.
Key specifications for NS1191-4P6: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.133 INCHES MINIMUM AND 0.150 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.