The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-701-3371, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-701-3371 |
| Primary Part Number | 18257-037 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba |
| Status | ACTIVE |
| Fastener Length | 1.25 INCHES NOMINAL IN |
| Thread Length | 0.5625 INCHES NOMINAL IN |
| Hardness Rating | 33.0 ROCKWELL C NOMINAL OVERALL |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | ZINC OVERALL |
| Minimum Yield Strength | 150000 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 18257-037 PRIMARY | Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba (USA) |
| 18257-037 | Curtiss-Wright Arresting Systems SAS (FRA) |
| 92620A779 | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 18257-037 | 5/9 Secondary reference Safran Aerosystems |
| 5305PL2115544 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5305-01-701-3371 is a Screw,cap,hexagon Head, manufactured by Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-701-3371 has 3 manufacturer part numbers on file: 18257-037 (Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba), 18257-037 (Curtiss-Wright Arresting Systems SAS), 92620A779 (Mcmaster-Carr Supply Co).
Key specifications for 18257-037: Fastener Length: 1.25 INCHES NOMINAL IN; Thread Length: 0.5625 INCHES NOMINAL IN; Hardness Rating: 33.0 ROCKWELL C NOMINAL OVERALL; Head Style: HEXAGON. 10 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.