PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21251Reamer,hand

Morse Cutting Tools · NSN 5110-00-255-6557 · FSC 5110 · No Item Name Available
Verified by PartsTable
NSN 5110-00-255-6557 — this item is cataloged by the U.S. Government under National Stock Number 5110-00-255-6557. Primary manufacturer part number: 21251.
Features
  • Reamer,hand — FSC 5110
  • Shank Type: STRAIGHT ROUND W/SQUARE END
  • Material: STEEL
  • Environmental Attribute Code: PLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
  • Specification/standard Data: 05047-ASME B94.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Flute Design: STRAIGHT
  • Flute Length: 4.188 INCHES NOMINAL IN
  • Diameter: 0.7500 INCHES NOMINAL IN
Applications
  • Applications requiring Steel construction
General Description

The Reamer,hand, cataloged under National Stock Number 5110-00-255-6557, is classified within Federal Supply Class 5110 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Morse Cutting Tools. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5110-00-255-6557
Primary Part Number21251
Item NameReamer,hand
FSC / FSG5110 / 51 — No Item Name Available
ManufacturerMorse Cutting Tools
StatusCANCELLED
Shank TypeSTRAIGHT ROUND W/SQUARE END
MaterialSTEEL
Environmental Attribute CodePLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
Specification/standard Data05047-ASME B94.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Flute DesignSTRAIGHT
Flute Length4.188 INCHES NOMINAL IN
Diameter0.7500 INCHES NOMINAL IN
Reamer TypeHAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5985-00-399-7135ESD3362-4 INTERCHANGEABLE
Mast Section
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5310-00-685-161821251 INTERCHANGEABLE
Washer,finishing
Mason Electric Co. Dba Mason Controls
1660-00-881-030621251 INTERCHANGEABLE
Converter,liquid Oxygen
Ingersoll-Rand Company Dba Ingersoll-Rand
4520-01-020-3263 INTERCHANGEABLE
Heating Element,electrical,nonim
5305-01-158-676521251 INTERCHANGEABLE
Setscrew
Erie Strayer Co
2910-01-168-8088J8123050 INTERCHANGEABLE
Float,carburetor
Chrysler Corp Engine and Components Sales Diversified Products Div
4730-01-231-862121251 INTERCHANGEABLE
Adapter,straight,tube to Boss
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5305-01-298-062921251 INTERCHANGEABLE
Screw,cap,hexagon Head
Industrial Technologies and Services Llc
6105-01-300-647221251-2 INTERCHANGEABLE
Motor,alternating Current
Silver King Refrigeration Inc.
6695-01-416-6993C24-550 INTERCHANGEABLE
Light Conductor,instrument Illum
Gtaa Llc Dba Gtaa Llc
Cross-Reference Index
Part NumberManufacturer
21251 Morse Cutting Tools (USA)
GGG-R-180 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-A-2928 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
B94.2 The American Society of Mechanical Engineers (USA)
712-046515 Doall Baltimore Company (USA)
GGG-R-180 TY1CL1GRA General Services Administration Federal Supply Service (USA)
C24550 Kennametal Inc. Div Kennametal Industrial Products Group (USA)
103HS 3/4 IN. Keystone Reamer and Tool Co (USA)
Related Parts
5985-00-399-7135INTERCHANGEABLE
MAST SECTION
ESD3362-4
5310-00-685-1618INTERCHANGEABLE
WASHER,FINISHING
21251
1660-00-881-0306INTERCHANGEABLE
CONVERTER,LIQUID OXYGEN
21251
4520-01-020-3263INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
5305-01-158-6765INTERCHANGEABLE
SETSCREW
21251
2910-01-168-8088INTERCHANGEABLE
FLOAT,CARBURETOR
J8123050
4730-01-231-8621INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
21251
5305-01-298-0629INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
21251
6105-01-300-6472INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
21251-2
6695-01-416-6993INTERCHANGEABLE
LIGHT CONDUCTOR,INSTRUMENT ILLUM
C24-550

Frequently Asked Questions

What is NSN 5110-00-255-6557?

NSN 5110-00-255-6557 is a Reamer,hand, manufactured by Morse Cutting Tools, classified under FSC 5110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5110-00-255-6557?

NSN 5110-00-255-6557 has 8 cross-referenced part numbers: 21251 (Morse Cutting Tools), GGG-R-180 (Federal Specifications Promulgated by General Services Administration Washington DC), A-A-2928 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), B94.2 (The American Society of Mechanical Engineers), 712-046515 (Doall Baltimore Company) and 3 more.

What NSN replaces 5110-00-255-6557?

There are 10 known substitutes for 5110-00-255-6557: 5985-00-399-7135, 5310-00-685-1618, 1660-00-881-0306 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21251?

Key specifications for 21251: Shank Type: STRAIGHT ROUND W/SQUARE END; Material: STEEL; Environmental Attribute Code: PLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT; Specification/standard Data: 05047-ASME B94.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5110-00-255-6557 still in active supply?

NSN 5110-00-255-6557 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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