The Screw,close Tolerance, cataloged under National Stock Number 5305-01-478-2834, 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 18 specifications, cited from the U.S. Government catalog. The record lists 17 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-478-2834 |
| Primary Part Number | 3M1170-V3-9A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.046 INCHES MAXIMUM IN |
| Fastener Length | 0.897 INCHES MINIMUM AND 0.917 INCHES MAXIMUM IN |
| Thread Length | 0.335 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN |
| Material Document and Classification | NAS4004 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 2200 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORX |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.293 INCHES MINIMUM AND 0.301 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 |
|---|---|
| TX1027V3-9A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1027V3-9A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1170V3-9A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M1170V3-9A | Houston Precision Fasteners I Lp (USA) |
| 3M1170-V3-9A PRIMARY | The Boeing Company Div Defense (USA) |
| TX1027V3-9A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1170V3-9A | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| GS1014V3-9A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| TX1027V3-9A | Huck International, Inc (USA) |
| 11845V3-9A | Reid Products Inc. Dba Reid Products Inc (USA) |
| WC1170V3-9A | West Coast Aerospace, Inc. (USA) |
| TX1027V3-9A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M1170V3-9A | Heartland Precision Fasteners Inc (USA) |
| TX1027V3-9A | Hi-Shear Corporation (USA) |
| TX1027V3-9A | Howmet Global Fastening Systems Inc (USA) |
| 3M1170V3-9A | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| TX1027V3-9A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| TX1027V3-9A | 5/9 Secondary reference Sps Technologies Inc |
| TX1027V3-9A | 5/2 Secondary reference U.S. Government activity |
| 3M1169V3-9A | 5/9 Secondary reference Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc |
| 11825-V3-9A | 5/9 Secondary reference Reid Products Inc. Dba Reid Products Inc |
| TX1027V3-9A | 5/9 Secondary reference Heartland Precision Fasteners Inc |
| TX1027V3-9A | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-478-2834 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-478-2834 has 17 manufacturer part numbers on file: TX1027V3-9A (Sps Technologies, Llc Dba PB Fasteners), TX1027V3-9A (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M1170V3-9A (Fastener Innovation Technology, Inc. Dba F I T), 3M1170V3-9A (Houston Precision Fasteners I Lp), 3M1170-V3-9A (The Boeing Company Div Defense) and 12 more.
Key specifications for 3M1170-V3-9A: Head Height: 0.046 INCHES MAXIMUM IN; Fastener Length: 0.897 INCHES MINIMUM AND 0.917 INCHES MAXIMUM IN; Thread Length: 0.335 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN; Material Document and Classification: NAS4004 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL. 18 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.