The Screw,close Tolerance, cataloged under National Stock Number 5305-01-183-8740, 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 19 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-183-8740 |
| Primary Part Number | 3M964-4L3 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Fastener Length | 0.600 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | PS13143,TYPE 2 CL 3,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.402 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 4967 COMP 6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.456 INCHES MINIMUM AND 0.508 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 |
|---|---|
| 3M964-4L3 | Howmet Global Fastening Systems Inc (USA) |
| 3M964-4L3 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M964-4L3 | Huck International, Inc (USA) |
| 3M964-4L3 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M964-4L3 | Hi-Shear Corporation (USA) |
| 3M964-4L3 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 3M964-4-3 | 5/9 Secondary reference Hi-Shear Corporation |
| 3M964-4L3 | 5/9 Secondary reference U.S. Government activity |
| 3M964-4L3 | 5/9 Secondary reference U.S. Government activity |
| 3M964-4-3 | 5/9 Secondary reference The Boeing Company Div Defense |
| 3M964-4L3 | 5/2 Secondary reference U.S. Government activity |
| 3M964-4-3 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| 3M964-4-3 | 5/9 Secondary reference U.S. Government activity |
| 3M964-4-3 | 5/9 Secondary reference U.S. Government activity |
| 3M964-4-3 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5305-01-183-8740 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-183-8740 has 6 manufacturer part numbers on file: 3M964-4L3 (Howmet Global Fastening Systems Inc), 3M964-4L3 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M964-4L3 (Huck International, Inc), 3M964-4L3 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 3M964-4L3 (Hi-Shear Corporation) and 1 more.
Key specifications for 3M964-4L3: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Fastener Length: 0.600 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN; Surface Treatment Document and Classification: PS13143,TYPE 2 CL 3,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 19 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.