The Packing,preformed, cataloged under National Stock Number 5330-01-377-1578, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is John Crane, Inc. Government technical data includes 8 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 | 5330-01-377-1578 |
| Primary Part Number | 1/2X1X1/4-2871 |
| Item Name | Packing,preformed |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | John Crane, Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | 2871, CAGE 71724 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SQUARE/RECTANGULAR |
| Peripheral Diameter | 1.000 INCHES NOMINAL IN |
| Center Hole Diameter | 0.500 INCHES NOMINAL IN |
| Environmental Attribute Code | ASBESTOS ALTERNATIVE PRODUCTS |
| Material | GLASS AND NICKEL ALLOY OVERALL |
| Joint Type | SCARF-PERIPHERAL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1/2X1X1/4-2871 PRIMARY | John Crane, Inc (USA) |
NSN 5330-01-377-1578 is a Packing,preformed, manufactured by John Crane, Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-377-1578 has 1 manufacturer part number on file: 1/2X1X1/4-2871 (John Crane, Inc).
Key specifications for 1/2X1X1/4-2871: Cross-Sectional Height: 0.250 INCHES NOMINAL IN; Material Document and Classification: 2871, CAGE 71724 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: SQUARE/RECTANGULAR; Peripheral Diameter: 1.000 INCHES NOMINAL IN. 8 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.