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Technical Data Sheet
PartsTable / COMPONENT / CM81
CM81 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The CALIPER,MICROMETER,INSIDE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, ring_style: WIRE, design_type: TUBULAR, gaging_range: +1.500 TO 12.000 INCHES IN, usage_design: INTERNAL, container_type: CASE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-282-0807, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
CM81
NSN: 5325-00-282-0807
FSC: 5325
CAGE: 26933 — SCOVILL INC HAMILTON BEACH DIV (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
ring_styleWIRE
design_typeTUBULAR
gaging_range+1.500 TO 12.000 INCHES IN
usage_designINTERNAL
container_typeCASE
graduation_unitTHOUSANDTHS OF AN INCH
inside_diameter0.6075 INCHES NOMINAL IN
outside_diameter0.688 INCHES NOMINAL IN
special_featuresFURNISHED WITH 8 RODS AND HANDLE
material_diameter0.040 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
NSN5325-00-282-0807
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: CM81 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL DIAMETER: 0.040 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
OUTSIDE DIAMETER: 0.688 INCHES NOMINAL IN
•
USAGE DESIGN: INTERNAL
•
RING STYLE: WIRE
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
INSIDE DIAMETER: 0.6075 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DIAMETER0.040 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING
CASEHARDENING INDICATORNOT CASEHARDENED
OUTSIDE DIAMETER0.688 INCHES NOMINAL IN
USAGE DESIGNINTERNAL
RING STYLEWIRE
CROSS-SECTIONAL SHAPE STYLEROUND
INSIDE DIAMETER0.6075 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
CM81Interchangeable
interchangeable cross-reference
interchangeable
823BZInterchangeable
interchangeable cross-reference
interchangeable
CM6221Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CM81?
CM81 is a CALIPER,MICROMETER,INSIDE.
What parts can replace CM81?
There are 3 known substitutes for CM81: CM81, 823BZ, CM6221. Substitute compatibility should be verified for your specific system.
What is the NSN for CM81?
CM81 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-282-0807. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026