The Insert,screw Thread, cataloged under National Stock Number 5325-01-129-1009, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Bach Sound Systems Co. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-129-1009 |
| Primary Part Number | 138-256-S |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Bach Sound Systems Co |
| Status | ACTIVE |
| Length | 0.138 INCHES NOMINAL IN |
| Insert Size | 0.122 IN. OD IN |
| Nominal Thread Size | 0.086 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 56 |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 138-256-S PRIMARY | Bach Sound Systems Co (USA) |
| Reference | Meaning |
|---|---|
| AB90032607 | 5/2 Secondary reference U.S. Government activity |
| 138-256 | 5/9 Secondary reference Bach Sound Systems Co |
NSN 5325-01-129-1009 is a Insert,screw Thread, manufactured by Bach Sound Systems Co, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-129-1009 has 1 manufacturer part number on file: 138-256-S (Bach Sound Systems Co).
Key specifications for 138-256-S: Length: 0.138 INCHES NOMINAL IN; Insert Size: 0.122 IN. OD IN; Nominal Thread Size: 0.086 INCHES IN; Thread Class: 2B. 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.