The Tap,thread Cutting, cataloged under National Stock Number 5136-00-397-2803, is classified within Federal Supply Class 5136 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Greenfield Industries Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5136-00-397-2803 |
| Primary Part Number | 13639 |
| Item Name | Tap,thread Cutting |
| FSC / FSG | 5136 / 51 — No Item Name Available |
| Manufacturer | Greenfield Industries Inc |
| Status | ACTIVE |
| Flute Quantity | 2 |
| Style Designator | STRAIGHT FLUTE |
| Length | 0.281 INCHES NOMINAL SQUARE END IN |
| Material | STEEL OVERALL |
| Width Across Flats | 0.191 INCHES NOMINAL IN |
| Thread Structure | REGULAR |
| Starting Chamfer Type | BOTTOMING |
| Thread Forming Method | GROUND |
| Thread Size and Series/type Designator | 0.250-28 UNF |
| Thread Direction | RIGHT-HAND |
| Thread Pitch Diameters | +0.2278 TO 0.2283 INCHES IN |
| Thread Length | 1.000 INCHES NOMINAL IN |
| Shank Diameter | 0.255 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 5302 1/4-28 UNF | Kennametal Inc. Div Kennametal Industrial Products Group (USA) |
| 5302 1/4-28 UNF | Greenfield Industries Inc (USA) |
| 13639 | Kennametal Inc. Div Kennametal Industrial Products Group (USA) |
| 13639 PRIMARY | Greenfield Industries Inc (USA) |
NSN 5136-00-397-2803 is a Tap,thread Cutting, manufactured by Greenfield Industries Inc, classified under FSC 5136 (No Item Name Available). Status: active.
NSN 5136-00-397-2803 has 4 cross-referenced part numbers: 5302 1/4-28 UNF (Kennametal Inc. Div Kennametal Industrial Products Group), 5302 1/4-28 UNF (Greenfield Industries Inc), 13639 (Kennametal Inc. Div Kennametal Industrial Products Group), 13639 (Greenfield Industries Inc).
There are 7 known substitutes for 5136-00-397-2803: 9540-00-008-6031, 1660-00-180-6436, 5310-00-209-1491 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 13639: Overall Length: 2.500 INCHES NOMINAL IN; Flute Quantity: 2; Style Designator: STRAIGHT FLUTE; Length: 0.281 INCHES NOMINAL SQUARE END IN. 14 total characteristics are documented in the Federal Logistics Information System.