The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-545-1009, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5305-01-545-1009 |
| Primary Part Number | H621-0102-79L1 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZX |
| Departure From Cited Designator | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| H621-0102-79L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 0.500-13UNRC-3AX1.250LG NICUALL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 566-6985426-79L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| H621-0102-79 | 5/1 Secondary reference U.S. Government activity |
| 0.500-13UNRC-3AX1.250LG NICUAL | 5/1 Secondary reference U.S. Government activity |
| 566-6985426-79 | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 5305-01-545-1009 is a Screw,cap,hexagon Head, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-545-1009 has 3 manufacturer part numbers on file: H621-0102-79L1 (Naval Inventory Control Point Mechanicsburg), 0.500-13UNRC-3AX1.250LG NICUALL1 (Naval Inventory Control Point Mechanicsburg), 566-6985426-79L1 (Naval Inventory Control Point Mechanicsburg).
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-662-0070, 5305-01-733-5441. Verify interchangeability with system specifications before substitution.
Key specifications for H621-0102-79L1: Criticality Code Justification: ZZZX; Departure From Cited Designator: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS; Part Name Assigned by Controlling Agency: (DRAWING), SCREW CAP; End Item Identification: DESURGER ASSY, AFT; DESURGER ASSY, FWD. 2 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.