The Insert,screw Thread, cataloged under National Stock Number 5325-01-678-8539, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Penn Engineering & Manufacturing Corp. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-678-8539 |
| Primary Part Number | PPB-M4-2 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Penn Engineering & Manufacturing Corp |
| Status | ACTIVE |
| Length | 7.95 MILLIMETERS NOMINAL MM |
| Knurl Length | 5.97 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 0.7 |
| Mounting Method | THREADED HOLE(S) |
| Insert Size | 1.20MM MM |
| Style Designator | SLOTTED |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 4.0 MILLIMETERS MM |
| Slot Depth | 8.97 MILLIMETERS MINIMUM MM |
| Material | LEAD ALLOY SLEEVE |
| Thread Series Designator | M |
| Slot Width | 1.20 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| PPB-M4-2 PRIMARY | Penn Engineering & Manufacturing Corp (USA) |
NSN 5325-01-678-8539 is a Insert,screw Thread, manufactured by Penn Engineering & Manufacturing Corp, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-678-8539 has 1 manufacturer part number on file: PPB-M4-2 (Penn Engineering & Manufacturing Corp).
Key specifications for PPB-M4-2: Length: 7.95 MILLIMETERS NOMINAL MM; Knurl Length: 5.97 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 0.7; Mounting Method: THREADED HOLE(S). 12 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.