PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B94.9Tap,thread Cutting

The American Society of Mechanical Engineers · NSN 5136-00-227-8612 · FSC 5136 · No Item Name Available
Verified by PartsTable
NSN 5136-00-227-8612 — this item is cataloged by the U.S. Government under National Stock Number 5136-00-227-8612. Primary manufacturer part number: B94.9.
Features
  • Tap,thread Cutting — FSC 5136
  • Thread Structure: REGULAR
  • Flute Quantity: 4
  • Thread Forming Method: GROUND
  • Starting Chamfer Type: TAPER
  • Departure From Cited Designator: AS MODIFIED BY THREAD PITCH DIAMETERS
  • Specification/standard Data: 05047-ASME B94.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Style Designator: STRAIGHT FLUTE
Applications
  • Applications requiring Steel Overall construction
General Description

The Tap,thread Cutting, cataloged under National Stock Number 5136-00-227-8612, is classified within Federal Supply Class 5136 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5136-00-227-8612
Primary Part NumberB94.9
Item NameTap,thread Cutting
FSC / FSG5136 / 51 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusACTIVE
Thread StructureREGULAR
Flute Quantity4
Thread Forming MethodGROUND
Starting Chamfer TypeTAPER
Departure From Cited DesignatorAS MODIFIED BY THREAD PITCH DIAMETERS
Specification/standard Data05047-ASME B94.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Style DesignatorSTRAIGHT FLUTE
MaterialSTEEL OVERALL
Width Across Flats0.242 INCHES NOMINAL IN
Thread Size and Series/type Designator0.438-20 UNF
Length0.406 INCHES NOMINAL SQUARE END IN
Thread Length1.438 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Thread Pitch Diameters+0.4050 TO 0.4055 INCHES IN
Shank Diameter0.323 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5136-00-227-8621 INTERCHANGEABLE
Tap,thread Cutting
Cross-Reference Index
Part NumberManufacturer
B94.9 The American Society of Mechanical Engineers (USA)
GGG-T-70 TY1SEBSTA General Services Administration Federal Supply Service (USA)
GGG-T-70 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
B94.9 7/16-20 UNF HS G H1 General Services Administration Federal Supply Service (USA)
A-A-625 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
5136-00-227-8621INTERCHANGEABLE
TAP,THREAD CUTTING

Frequently Asked Questions

What is NSN 5136-00-227-8612?

NSN 5136-00-227-8612 is a Tap,thread Cutting, manufactured by The American Society of Mechanical Engineers, classified under FSC 5136 (No Item Name Available). Status: active.

What are the part numbers for NSN 5136-00-227-8612?

NSN 5136-00-227-8612 has 5 cross-referenced part numbers: B94.9 (The American Society of Mechanical Engineers), GGG-T-70 TY1SEBSTA (General Services Administration Federal Supply Service), GGG-T-70 (Federal Specifications Promulgated by General Services Administration Washington DC), B94.9 7/16-20 UNF HS G H1 (General Services Administration Federal Supply Service), A-A-625 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).

What NSN replaces 5136-00-227-8612?

There is 1 known substitute for 5136-00-227-8612: 5136-00-227-8621. Verify interchangeability with system specifications before substitution.

What are the specifications of B94.9?

Key specifications for B94.9: Overall Length: 3.156 INCHES NOMINAL IN; Thread Structure: REGULAR; Flute Quantity: 4; Thread Forming Method: GROUND. 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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