The Rule,machinist's, cataloged under National Stock Number 5210-01-170-0735, is classified within Federal Supply Class 5210 (Measuring Tools, Craftsmen's) of the Measuring Tools group. The manufacturer of record is L.s. Starrett Company (the) Div Tool Division. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 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 | 5210-01-170-0735 |
| Primary Part Number | C635-300 |
| Item Name | Rule,machinist's |
| FSC / FSG | 5210 / 52 — Measuring Tools, Craftsmen's |
| Manufacturer | L.s. Starrett Company (the) Div Tool Division |
| Status | ACTIVE |
| Reading Direction | LEFT OR RIGHT |
| Edge Smallest Graduation Unit | 0.5 MILLIMETER AND 1.0 MILLIMETER MM |
| Length | 300.0 MILLIMETERS MM |
| Width | 25.4 MILLIMETERS NOMINAL MM |
| Material | STEEL |
| Thickness | 1.2 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 |
NSN 5210-01-170-0735 is a Rule,machinist's, manufactured by L.s. Starrett Company (the) Div Tool Division, classified under FSC 5210, Measuring Tools, Craftsmen's. Status: active.
NSN 5210-01-170-0735 has 2 manufacturer part numbers on file: 52631 (L.s. Starrett Company (the) Div Tool Division), C635-300 (L.s. Starrett Company (the) Div Tool Division).
2 possible matches (shared part number, not a government interchangeability claim): 5315-01-487-5631, 5120-01-504-8447. Verify interchangeability with system specifications before substitution.
Key specifications for C635-300: Reading Direction: LEFT OR RIGHT; Edge Smallest Graduation Unit: 0.5 MILLIMETER AND 1.0 MILLIMETER MM; Length: 300.0 MILLIMETERS MM; Special Features: SPRING TEMPERED; GRADUATED IN 1/2MM AND MM ON BOTH SIDES; SATIN CHROME FINISH MM. 6 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.