The Parallel, cataloged under National Stock Number 5220-00-277-9481, is classified within Federal Supply Class 5220 (Inspection Gages and Precision Layout Tools) of the Measuring Tools group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5220-00-277-9481 |
| Item Name | Parallel |
| FSC / FSG | 5220 / 52 — Inspection Gages and Precision Layout Tools |
| Status | ACTIVE |
| Matched Pairs | NOT FURNISHED |
| Material Hardness Rating | 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM |
| Design Type | STRAIGHT BAR |
| Nondefinitive Spec/std Data | 1 TYPE |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| GGG-P-61 | 4/1 Identification reference U.S. Government activity |
| P4519ANDTYPE1 | 5/9 Secondary reference U.S. Government activity |
NSN 5220-00-277-9481 is a Parallel, classified under FSC 5220, Inspection Gages and Precision Layout Tools. Status: active.
6 possible matches (shared part number, not a government interchangeability claim): 5220-00-278-1188, 5220-00-278-1424, 5220-00-278-1425. Verify interchangeability with system specifications before substitution.
Key specifications for 5220-00-277-9481: Overall Height: 0.500 INCHES NOMINAL IN; Matched Pairs: NOT FURNISHED; Material Hardness Rating: 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM; Design Type: STRAIGHT BAR. 5 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.