The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-018-1003, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Mack Trucks Inc Parts Opn. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-018-1003 |
| Primary Part Number | 1AX8 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mack Trucks Inc Parts Opn |
| Status | ACTIVE |
| 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 |
|---|---|
| 1AX8 PRIMARY | Mack Trucks Inc Parts Opn (USA) |
| K-500-CH-0623 PRIMARY | Kovatch Corp. (USA) |
| 20704696 | Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales (AUS) |
| Reference | Meaning |
|---|---|
| 1AX8 | 5/9 Secondary reference Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales |
| 123435 | 5/9 Secondary reference Chrysler Realty Company Llc Dba Daimler Chrysler |
| 214594 | 5/9 Secondary reference General Motors Corp |
| 181003 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 1AX 8 | 3/2 Design control — primary reference U.S. Government activity |
| 214594 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 181003 | 5/9 Secondary reference General Motors Corp |
| 112607H | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 70723H | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 181003 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 11X120U | 5/9 Secondary reference Sasco Inc Canadian Div |
NSN 5305-00-018-1003 is a Screw,cap,hexagon Head, manufactured by Mack Trucks Inc Parts Opn, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-018-1003 has 3 manufacturer part numbers on file: 1AX8 (Mack Trucks Inc Parts Opn), K-500-CH-0623 (Kovatch Corp.), 20704696 (Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales).
3 possible matches (shared part number, not a government interchangeability claim): 5342-00-027-4490, 5310-00-392-1972, 5305-01-194-6438. Verify interchangeability with system specifications before substitution.
Key specifications for 1AX8: Special Features: FINISHED HEX BOLT; NATIONAL FINE THREAD; CLEAR ZINC; Part Name Assigned by Controlling Agency: SCREW, CAP. 0 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.