The Extension,tap, cataloged under National Stock Number 5136-01-371-2436, is classified within Federal Supply Class 5136 (Taps, Dies, and Collets; Hand and Machine) of the Hand Tools group. The manufacturer of record is Collis Tool Corporation. Government technical data includes 1 specification, 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5136-01-371-2436 |
| Primary Part Number | 70231 |
| Item Name | Extension,tap |
| FSC / FSG | 5136 / 51 — Taps, Dies, and Collets; Hand and Machine |
| Manufacturer | Collis Tool Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL; 6 IN. LG; FOR 3/4 IN. TAP SIZE; 1-51/64 IN. HOLDER DEPTH; SHANK SIZE IS SAME AS TAP IN HOLDER IN |
| 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 |
|---|---|
| 70231 PRIMARY | Collis Tool Corporation (USA) |
NSN 5136-01-371-2436 is a Extension,tap, manufactured by Collis Tool Corporation, classified under FSC 5136, Taps, Dies, and Collets; Hand and Machine. Status: active.
NSN 5136-01-371-2436 has 1 manufacturer part number on file: 70231 (Collis Tool Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-434-9598. Verify interchangeability with system specifications before substitution.
Key specifications for 70231: General Characteristics Item Description: STEEL; 6 IN. LG; FOR 3/4 IN. TAP SIZE; 1-51/64 IN. HOLDER DEPTH; SHANK SIZE IS SAME AS TAP IN HOLDER IN. 1 specification is 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.