The Screw,close Tolerance, cataloged under National Stock Number 5305-01-334-3556, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-334-3556 |
| Primary Part Number | SC5053-3-3 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.047 INCHES MINIMUM AND 0.049 INCHES MAXIMUM IN |
| Fastener Length | 0.550 INCHES NOMINAL IN |
| Thread Length | 0.363 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.1900 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.187 INCHES NOMINAL IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Countersink Angle | 129.0 DEGREES MINIMUM AND 131.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.3206 INCHES NOMINAL 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 |
|---|---|
| SC5053-3-3 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 1701-3-3 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| FIT7884-3-3 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| Reference | Meaning |
|---|---|
| 111395-3-3 | 3/2 Design control — primary reference U.S. Government activity |
| AIC1701-3-3 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| 3D0080-3-3 | 1/2 Source control — Government-approved source U.S. Government activity |
| 5053-3-3 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5305-01-334-3556 is a Screw,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-334-3556 has 3 manufacturer part numbers on file: SC5053-3-3 (Howmet Global Fastening Systems Inc), 1701-3-3 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), FIT7884-3-3 (Fastener Innovation Technology, Inc. Dba F I T).
Key specifications for SC5053-3-3: Head Height: 0.047 INCHES MINIMUM AND 0.049 INCHES MAXIMUM IN; Fastener Length: 0.550 INCHES NOMINAL IN; Thread Length: 0.363 INCHES NOMINAL IN; Nominal Thread Diameter: 0.1900 INCHES IN. 15 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.