The Tap,thread Cutting, cataloged under National Stock Number 5136-00-972-0400, is classified within Federal Supply Class 5136 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5136-00-972-0400 |
| Primary Part Number | MIL-T-21309 |
| Item Name | Tap,thread Cutting |
| FSC / FSG | 5136 / 51 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Thread Pitch Diameters | +0.5335 TO 0.5340 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Thread Length | 1.656 INCHES NOMINAL IN |
| Thread Structure | REGULAR |
| Thread Forming Method | GROUND |
| Width Across Flats | 0.316 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Flute Quantity | 4 |
| Style Designator | STRAIGHT FLUTE |
| Starting Chamfer Type | BOTTOMING |
| Nondefinitive Spec/std Data | 1 TYPE AND 3 CLASS |
| Length | 0.500 INCHES NOMINAL SQUARE END IN |
| Specification/standard Data | 0U583-SAE AS59158 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Thread Size and Series/type Designator | 0.500-20 STI |
| Material | STEEL OVERALL |
| Shank Diameter | 0.428 INCHES MINIMUM AND 0.429 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MIL-T-21309 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| A-A-59158 TY1CL3 | General Services Administration Federal Supply Service (USA) |
| A-A-59158 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| AS59158 TY1CL3 | General Services Administration Federal Supply Service (USA) |
| 8FBB | Stanley Engineered Fastening Llc (USA) |
| AS59158 | Sae International Dba Sae International (USA) |
| MIL-T-21309 TY1CL3 | General Services Administration Federal Supply Service (USA) |
| AS59158 | Society of Automotive Engineers Inc (USA) |
NSN 5136-00-972-0400 is a Tap,thread Cutting, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5136 (No Item Name Available). Status: active.
NSN 5136-00-972-0400 has 8 cross-referenced part numbers: MIL-T-21309 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), A-A-59158 TY1CL3 (General Services Administration Federal Supply Service), A-A-59158 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), AS59158 TY1CL3 (General Services Administration Federal Supply Service), 8FBB (Stanley Engineered Fastening Llc) and 3 more.
There are 11 known substitutes for 5136-00-972-0400: 5136-00-779-4469, 5136-00-838-0284, 5136-00-902-7893 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for MIL-T-21309: Thread Pitch Diameters: +0.5335 TO 0.5340 INCHES IN; Thread Direction: RIGHT-HAND; Thread Length: 1.656 INCHES NOMINAL IN; Overall Length: 3.594 INCHES NOMINAL IN. 17 total characteristics are documented in the Federal Logistics Information System.