PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GGG-T-581 TY1CL1Tap,thread Cutting

General Services Administration Federal Supply Service · NSN 5136-00-189-7801 · FSC 5136 · No Item Name Available
Verified by PartsTable
NSN 5136-00-189-7801 — this item is cataloged by the U.S. Government under National Stock Number 5136-00-189-7801. Primary manufacturer part number: GGG-T-581 TY1CL1.
Features
  • Tap,thread Cutting — FSC 5136
  • Starting Chamfer Type: PLUG
  • Material: STEEL OVERALL
  • Thread Length: 1.625 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN
  • Shank Diameter: 1.497 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
  • Thread Structure: REGULAR
  • Length: 0.938 INCHES MINIMUM AND 1.062 INCHES MAXIMUM SQUARE END IN
  • Thread Forming Method: CUT
Applications
  • Applications requiring Steel Overall construction
General Description

The Tap,thread Cutting, cataloged under National Stock Number 5136-00-189-7801, is classified within Federal Supply Class 5136 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is General Services Administration Federal Supply Service. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5136-00-189-7801
Primary Part NumberGGG-T-581 TY1CL1
Item NameTap,thread Cutting
FSC / FSG5136 / 51 — No Item Name Available
ManufacturerGeneral Services Administration Federal Supply Service
StatusCANCELLED
Starting Chamfer TypePLUG
MaterialSTEEL OVERALL
Thread Length1.625 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN
Shank Diameter1.497 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
Thread StructureREGULAR
Length0.938 INCHES MINIMUM AND 1.062 INCHES MAXIMUM SQUARE END IN
Thread Forming MethodCUT
Flute Quantity6
Specification/standard Data05047-ASME B94.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Thread Size and Series/type Designator1.500-11-1/2 NPT
Width Across Flats1.117 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
Starting Chamfer TypePLUG
Thread StructureREGULAR
MaterialSTEEL OVERALL
Style DesignatorSTRAIGHT FLUTE
Thread DirectionLEFT-HAND
Style DesignatorSTRAIGHT FLUTE
Length0.938 INCHES MINIMUM AND 1.062 INCHES MAXIMUM SQUARE END IN
Thread Length1.625 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN
Shank Diameter1.497 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
Specification/standard Data05047-ASME B94.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Flute Quantity6
Width Across Flats1.117 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
Thread Size and Series/type Designator1.500-11-1/2 NPT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5136-00-189-7800 INTERCHANGEABLE
Tap,thread Cutting
5136-00-189-7805385331 INTERCHANGEABLE
Tap,thread Cutting
Greenfield Industries Inc
5136-00-189-7806 INTERCHANGEABLE
Tap,thread Cutting
5136-00-189-7807 INTERCHANGEABLE
Tap,thread Cutting
5136-00-189-7808 INTERCHANGEABLE
Tap,thread Cutting
5136-00-237-8147 INTERCHANGEABLE
Tap,thread Cutting
5136-00-237-8148 INTERCHANGEABLE
Tap,thread Cutting
5136-00-237-8149 INTERCHANGEABLE
Tap,thread Cutting
5136-00-596-1205 INTERCHANGEABLE
Tap Set,thread Cutting
5136-00-889-5309 INTERCHANGEABLE
Tap,thread Cutting
Cross-Reference Index
Part NumberManufacturer
GGG-T-581 TY1CL1 General Services Administration Federal Supply Service (USA)
B94.9 The American Society of Mechanical Engineers (USA)
A-A-364 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
GGG-T-581 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5136-00-189-7800INTERCHANGEABLE
TAP,THREAD CUTTING
5136-00-189-7805INTERCHANGEABLE
TAP,THREAD CUTTING
385331
5136-00-189-7806INTERCHANGEABLE
TAP,THREAD CUTTING
5136-00-189-7807INTERCHANGEABLE
TAP,THREAD CUTTING
5136-00-189-7808INTERCHANGEABLE
TAP,THREAD CUTTING
5136-00-237-8147INTERCHANGEABLE
TAP,THREAD CUTTING
5136-00-237-8148INTERCHANGEABLE
TAP,THREAD CUTTING
5136-00-237-8149INTERCHANGEABLE
TAP,THREAD CUTTING
5136-00-596-1205INTERCHANGEABLE
TAP SET,THREAD CUTTING
5136-00-889-5309INTERCHANGEABLE
TAP,THREAD CUTTING
5136-00-889-5316INTERCHANGEABLE
TAP,THREAD CUTTING
5136-00-889-6976INTERCHANGEABLE
TAP,THREAD CUTTING

Frequently Asked Questions

What is NSN 5136-00-189-7801?

NSN 5136-00-189-7801 is a Tap,thread Cutting, manufactured by General Services Administration Federal Supply Service, classified under FSC 5136 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5136-00-189-7801?

NSN 5136-00-189-7801 has 4 cross-referenced part numbers: GGG-T-581 TY1CL1 (General Services Administration Federal Supply Service), B94.9 (The American Society of Mechanical Engineers), A-A-364 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), GGG-T-581 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5136-00-189-7801?

There are 12 known substitutes for 5136-00-189-7801: 5136-00-189-7800, 5136-00-189-7805, 5136-00-189-7806 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GGG-T-581 TY1CL1?

Key specifications for GGG-T-581 TY1CL1: Starting Chamfer Type: PLUG; Material: STEEL OVERALL; Thread Length: 1.625 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN; Shank Diameter: 1.497 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN. 26 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5136-00-189-7801 still in active supply?

NSN 5136-00-189-7801 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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