PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B94.9 1/2-20 UNF HS G H1Tap,thread Cutting

General Services Administration Federal Supply Service · NSN 5136-00-227-8613 · FSC 5136 · No Item Name Available
Verified by PartsTable
NSN 5136-00-227-8613 — this item is cataloged by the U.S. Government under National Stock Number 5136-00-227-8613. Primary manufacturer part number: B94.9 1/2-20 UNF HS G H1.
Features
  • Tap,thread Cutting — FSC 5136
  • Thread Direction: RIGHT-HAND
  • Thread Structure: REGULAR
  • Material: STEEL OVERALL
  • Starting Chamfer Type: TAPER
  • Thread Forming Method: GROUND
  • Style Designator: STRAIGHT FLUTE
  • Length: 0.438 INCHES NOMINAL SQUARE END IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Tap,thread Cutting, cataloged under National Stock Number 5136-00-227-8613, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5136-00-227-8613
Primary Part NumberB94.9 1/2-20 UNF HS G H1
Item NameTap,thread Cutting
FSC / FSG5136 / 51 — No Item Name Available
ManufacturerGeneral Services Administration Federal Supply Service
StatusACTIVE
Thread DirectionRIGHT-HAND
Thread StructureREGULAR
MaterialSTEEL OVERALL
Starting Chamfer TypeTAPER
Thread Forming MethodGROUND
Style DesignatorSTRAIGHT FLUTE
Length0.438 INCHES NOMINAL SQUARE END IN
Departure From Cited DesignatorAS MODIFIED BY STARTING CHAMFER TYPE
Specification/standard Data05047-ASME B94.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Thread Size and Series/type Designator0.500-20 UNF
Width Across Flats0.275 INCHES NOMINAL IN
Flute Quantity4
Thread Length1.656 INCHES NOMINAL IN
Shank Diameter0.367 INCHES NOMINAL IN
Thread Pitch Diameters+0.4675 TO 0.4680 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5136-00-227-8622 INTERCHANGEABLE
Tap,thread Cutting
5136-00-596-1471 INTERCHANGEABLE
Tap,thread Cutting
Cross-Reference Index
Part NumberManufacturer
B94.9 1/2-20 UNF HS G H1 General Services Administration Federal Supply Service (USA)
B94.9 The American Society of Mechanical Engineers (USA)
GGG-T-70 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
GGG-T-70 TY1SEBSTA General Services Administration Federal Supply Service (USA)
A-A-625 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
124625 Jarvis Cutting Tools Inc (USA)
Related Parts
5136-00-227-8622INTERCHANGEABLE
TAP,THREAD CUTTING
5136-00-596-1471INTERCHANGEABLE
TAP,THREAD CUTTING

Frequently Asked Questions

What is NSN 5136-00-227-8613?

NSN 5136-00-227-8613 is a Tap,thread Cutting, manufactured by General Services Administration Federal Supply Service, classified under FSC 5136 (No Item Name Available). Status: active.

What are the part numbers for NSN 5136-00-227-8613?

NSN 5136-00-227-8613 has 6 cross-referenced part numbers: B94.9 1/2-20 UNF HS G H1 (General Services Administration Federal Supply Service), B94.9 (The American Society of Mechanical Engineers), GGG-T-70 (Federal Specifications Promulgated by General Services Administration Washington DC), GGG-T-70 TY1SEBSTA (General Services Administration Federal Supply Service), A-A-625 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC) and 1 more.

What NSN replaces 5136-00-227-8613?

There are 2 known substitutes for 5136-00-227-8613: 5136-00-227-8622, 5136-00-596-1471. Verify interchangeability with system specifications before substitution.

What are the specifications of B94.9 1/2-20 UNF HS G H1?

Key specifications for B94.9 1/2-20 UNF HS G H1: Thread Direction: RIGHT-HAND; Thread Structure: REGULAR; Overall Length: 3.375 INCHES NOMINAL IN; Material: STEEL OVERALL. 16 total characteristics are documented in the Federal Logistics Information System.

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