PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B94.9Tap,thread Cutting

The American Society of Mechanical Engineers · NSN 5136-00-596-1471 · FSC 5136 · No Item Name Available
Verified by PartsTable
NSN 5136-00-596-1471 — this item is cataloged by the U.S. Government under National Stock Number 5136-00-596-1471. Primary manufacturer part number: B94.9.
Features
  • Tap,thread Cutting — FSC 5136
  • Thread Length: 1.66 INCHES MINIMUM IN
  • Thread Size and Series/type Designator: 0.500-20 UNF
  • Material: STEEL OVERALL
  • Length: 0.438 INCHES NOMINAL SQUARE END IN
  • Thread Structure: REGULAR
  • Thread Forming Method: GROUND
  • Starting Chamfer Type: TAPER
Applications
  • Applications requiring Steel Overall construction
General Description

The Tap,thread Cutting, cataloged under National Stock Number 5136-00-596-1471, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 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
NSN5136-00-596-1471
Primary Part NumberB94.9
Item NameTap,thread Cutting
FSC / FSG5136 / 51 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusACTIVE
Thread Length1.66 INCHES MINIMUM IN
Thread Size and Series/type Designator0.500-20 UNF
MaterialSTEEL OVERALL
Length0.438 INCHES NOMINAL SQUARE END IN
Thread StructureREGULAR
Thread Forming MethodGROUND
Starting Chamfer TypeTAPER
Flute Quantity4
Specification/standard Data05047-ASME B94.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Style DesignatorSTRAIGHT FLUTE
Width Across Flats0.275 INCHES NOMINAL IN
Shank Diameter0.429 INCHES MINIMUM IN
Thread DirectionLEFT-HAND
Thread Pitch Diameters+0.4675 TO 0.4680 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5136-00-227-8613 INTERCHANGEABLE
Tap,thread Cutting
5136-00-227-8622 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 1/2-20 UNF HS G H1 General Services Administration Federal Supply Service (USA)
Related Parts
5136-00-227-8613INTERCHANGEABLE
TAP,THREAD CUTTING
5136-00-227-8622INTERCHANGEABLE
TAP,THREAD CUTTING

Frequently Asked Questions

What is NSN 5136-00-596-1471?

NSN 5136-00-596-1471 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 5136-00-596-1471?

NSN 5136-00-596-1471 has 4 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 1/2-20 UNF HS G H1 (General Services Administration Federal Supply Service).

What NSN replaces 5136-00-596-1471?

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

What are the specifications of B94.9?

Key specifications for B94.9: Thread Length: 1.66 INCHES MINIMUM IN; Thread Size and Series/type Designator: 0.500-20 UNF; Material: STEEL OVERALL; Overall Length: 3.375 INCHES NOMINAL IN. 15 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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