The Screw,machine, cataloged under National Stock Number 5305-01-340-4832, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Asi Design & Manufacturing, Inc. Dba a S I. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-340-4832 |
| Primary Part Number | 1A20656H01 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Asi Design & Manufacturing, Inc. Dba a S I |
| Status | ACTIVE |
| Head Height | 0.053 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 1.228 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Thread Length | 0.150 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.086 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 56 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.180 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| 1A20656H01 PRIMARY | Asi Design & Manufacturing, Inc. Dba a S I (USA) |
| 1A20656H01 PRIMARY | Allmetal Screw Products Corp (USA) |
| Reference | Meaning |
|---|---|
| 1A20656H01 | 5/9 Secondary reference Electro Switch Corp. Dba Electro Switch Corp Div Digitran a Unit of Electro Switch |
| 1A20656H01 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5305-01-340-4832 is a Screw,machine, manufactured by Asi Design & Manufacturing, Inc. Dba a S I, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-340-4832 has 2 manufacturer part numbers on file: 1A20656H01 (Asi Design & Manufacturing, Inc. Dba a S I), 1A20656H01 (Allmetal Screw Products Corp).
Key specifications for 1A20656H01: Head Height: 0.053 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 1.228 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN; Thread Length: 0.150 INCHES MINIMUM IN. 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.