The Insert,screw Thread, cataloged under National Stock Number 5325-01-688-1278, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Helical Wire Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-688-1278 |
| Primary Part Number | MA3279-174 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Helical Wire Inc |
| Status | ACTIVE |
| Thread Pitch in Millimeters | 2.5 |
| Mounting Method | MOUNTING SLOTS |
| Style Designator | COIL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 20.0 MILLIMETERS MM |
| Material | STEEL PANEL |
| Thread Series Designator | M |
| 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 |
|---|---|
| MA3279-174 PRIMARY | Helical Wire Inc (USA) |
NSN 5325-01-688-1278 is a Insert,screw Thread, manufactured by Helical Wire Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-688-1278 has 1 manufacturer part number on file: MA3279-174 (Helical Wire Inc).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-728-2543. Verify interchangeability with system specifications before substitution.
Key specifications for MA3279-174: Thread Pitch in Millimeters: 2.5; Mounting Method: MOUNTING SLOTS; Style Designator: COIL; Thread Direction: RIGHT-HAND. 7 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.