The Screw,close Tolerance, cataloged under National Stock Number 5305-01-203-6447, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fastener Innovation Technology, Inc. Dba F I T. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 19 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-203-6447 |
| Primary Part Number | 3M927-4L6 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fastener Innovation Technology, Inc. Dba F I T |
| Status | ACTIVE |
| Fastener Length | 0.829 INCHES MINIMUM AND 0.859 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-83488,TY 2,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Material Document and Classification | 23-118 TY D,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM AND CHROMATE OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 101.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.3898 INCHES MINIMUM AND 0.3948 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 |
|---|---|
| HT4069-4-6A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4069-A-6A | Howmet Global Fastening Systems Inc (USA) |
| HT4069-4-6A | Hi-Shear Corporation (USA) |
| 3M927-4L6 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M927-4L6 | Houston Precision Fasteners I Lp (USA) |
| 3M927-4L6 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M927-4L6 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 11885-4L6 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4069-4-6A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M927-4L6 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M927-4L6 PRIMARY | West Coast Aerospace, Inc. (USA) |
| 3M927-4L6 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M927-4L6 | Saturn Fasteners Inc (USA) |
| 3M927-4L6 | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| 3M927-4L6 | Huck International, Inc (USA) |
| 3M927-4L6 | Camcar Llc Div Camcar Llc (USA) |
| 3M927-4L6 | Heartland Precision Fasteners Inc (USA) |
| WC4069-4-16 | West Coast Aerospace, Inc. (USA) |
| 3M927-4L6 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| HT4069-4-6A | 5/9 Secondary reference U.S. Government activity |
| 3M927-4L6 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4069-4-6A | 5/9 Secondary reference Huck International, Inc |
| HT4069-4-6A | 5/2 Secondary reference U.S. Government activity |
| HT4069-4-6A | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-203-6447 is a Screw,close Tolerance, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-203-6447 has 19 manufacturer part numbers on file: HT4069-4-6A (Sps Technologies, Llc Dba PB Fasteners), HT4069-A-6A (Howmet Global Fastening Systems Inc), HT4069-4-6A (Hi-Shear Corporation), 3M927-4L6 (Reid Products Inc. Dba Reid Products Inc), 3M927-4L6 (Houston Precision Fasteners I Lp) and 14 more.
Key specifications for 3M927-4L6: Fastener Length: 0.829 INCHES MINIMUM AND 0.859 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-83488,TY 2,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN; Material Document and Classification: 23-118 TY D,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL. 17 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.