The Screw,close Tolerance, cataloged under National Stock Number 5305-01-476-9194, 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 16 specifications, cited from the U.S. Government catalog. The record lists 18 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-476-9194 |
| Primary Part Number | 3M1170D4-9A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 0.972 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| 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 |
| Grip Length | 0.562 INCHES NOMINAL IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM 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 | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.358 INCHES MINIMUM AND 0.395 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 |
|---|---|
| 3M1170D4-9A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M1170D4-9A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M1170D4-9A PRIMARY | The Boeing Company Div Defense (USA) |
| 3M1170D4-9A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 11845D4-9A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1170D4-9A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1170D4-9A | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 11825D4-9A | Reid Products Inc. Dba Reid Products Inc (USA) |
| TX1027D4-9A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| 3M1170D4-9A | Howmet Global Fastening Systems Inc (USA) |
| 3M1170D4-9A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1170D4-9A | West Coast Aerospace, Inc. (USA) |
| 3M1170D4-9A | Houston Precision Fasteners I Lp (USA) |
| 3M1170D4-9A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1170D4-9A | Hi-Shear Corporation (USA) |
| 3M1170D4-9A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M1170D4-9A | Huck International, Inc (USA) |
| 3M1170D4-9A | Heartland Precision Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| 3M1170D4-9A | 5/2 Secondary reference U.S. Government activity |
| 3M1170D4-9A | 5/2 Secondary reference U.S. Government activity |
| TX1027D4-9A | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-476-9194 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-476-9194 has 18 manufacturer part numbers on file: 3M1170D4-9A (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 3M1170D4-9A (Fastener Innovation Technology, Inc. Dba F I T), 3M1170D4-9A (The Boeing Company Div Defense), 3M1170D4-9A (Reid Products Inc. Dba Reid Products Inc), 11845D4-9A (Reid Products Inc. Dba Reid Products Inc) and 13 more.
Key specifications for 3M1170D4-9A: Fastener Length: 0.972 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN; Thread Length: 0.425 INCHES NOMINAL IN; Material Document and Classification: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Spline Major Diameter: 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN. 16 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.