The Screw,close Tolerance, cataloged under National Stock Number 5305-01-284-7161, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-284-7161 |
| Primary Part Number | H185-5-30 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Fastener Length | 2.376 INCHES NOMINAL IN |
| Thread Length | 0.501 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.875 INCHES NOMINAL IN |
| Grip Diameter | 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.429 INCHES MINIMUM AND 0.479 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 |
|---|---|
| H185-5-30 PRIMARY | Huck International, Inc (USA) |
| C7985-5-30 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| PBF1166-5-30 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC985-5-30 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| C7985-5-30 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| H185-5-30 | 5/9 Secondary reference U.S. Government activity |
| AIC985-5-30P | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| C7985-5-30 | 7/2 Vendor item drawing reference U.S. Government activity |
| 121558-5-A30P | 3/2 Design control — primary reference U.S. Government activity |
| VT1694F5-30 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-284-7161 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-284-7161 has 5 manufacturer part numbers on file: H185-5-30 (Huck International, Inc), C7985-5-30 (Sps Technologies, Llc Dba PB Fasteners), PBF1166-5-30 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), AIC985-5-30 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), C7985-5-30 (Howmet Global Fastening Systems Inc).
Key specifications for H185-5-30: Fastener Length: 2.376 INCHES NOMINAL IN; Thread Length: 0.501 INCHES NOMINAL IN; Nominal Thread Diameter: 0.312 INCHES IN; Head Style: FLAT COUNTERSUNK. 14 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.