The Screw,close Tolerance, cataloged under National Stock Number 5305-01-477-5960, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-477-5960 |
| Primary Part Number | 3M1170V4-7A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Heartland Precision Fasteners Inc |
| Status | ACTIVE |
| Point Diameter | 0.425 INCHES NOMINAL IN |
| Fastener Length | 0.848 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN |
| Thread Length | 0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN |
| Spline Major Diameter | 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Grip Length | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Grip Diameter | 0.249 INCHES NOMINAL IN |
| Internal Drive Style | TORX |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.385 INCHES MINIMUM AND 0.394 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 |
|---|---|
| 3M1170V4-7A PRIMARY | Heartland Precision Fasteners Inc (USA) |
| TX1027V4-7A PRIMARY | Hi-Shear Corporation (USA) |
| 11825V4-7A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1170V4-7A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| TX1027V4-7A PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1027V4-7A PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1170V4-7A | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| WC1170V4-7A | West Coast Aerospace, Inc. (USA) |
| 3M1170V4-7A PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M1170V4-7A | Houston Precision Fasteners I Lp (USA) |
| TX1027V4-7A PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 11845V4-7A PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1170V4-7A PRIMARY | Saturn Fasteners Inc (USA) |
| GS1014V4-7A PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| TX1027V4-7A PRIMARY | Huck International, Inc (USA) |
| TX1027V4-7A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| TX1027V4-7A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 3M1170V4-7A | The Boeing Company Div Defense (USA) |
| TX1027V4-7A PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| TX1027V4-7A | 3/2 Design control — primary reference U.S. Government activity |
| TX1027V4-7A | 3/2 Design control — primary reference U.S. Government activity |
| TX1027V4-7A | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-477-5960 is a Screw,close Tolerance, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-477-5960 has 19 manufacturer part numbers on file: 3M1170V4-7A (Heartland Precision Fasteners Inc), TX1027V4-7A (Hi-Shear Corporation), 11825V4-7A (Reid Products Inc. Dba Reid Products Inc), 3M1170V4-7A (Fastener Innovation Technology, Inc. Dba F I T), TX1027V4-7A (Sps Technologies, Llc Dba PB Fasteners) and 14 more.
Key specifications for 3M1170V4-7A: Point Diameter: 0.425 INCHES NOMINAL IN; Fastener Length: 0.848 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN; Thread Length: 0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN; Spline Major Diameter: 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN. 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.