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Technical Data Sheet
PartsTable / MRO / 1003251
1003251 ✓ Verified by PartsTable
3M · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The MODULATOR,RADIO TRANSMITTER is a 3M industrial component. Key specifications include diameter: 0.2500 INCHES MINIMUM AND 0.2502 INCHES MAXIMUM IN, material: STEEL CORROSION RESISTING OVERALL, drive_type: AIR PRESSURE, overall_length: 1.345 INCHES MINIMUM AND 1.355 INCHES MAXIMUM IN, reservoir_type: SINGLE, surface_finish: 63.0 MICROINCHES OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-461-4350, 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
MRO→ MRO_GENERAL→ 1003251
NSN: 5315-00-461-4350
FSC: 5315
CAGE: 81873 — WOODWARD HRT INC (USA)
SPECIFICATIONS
diameter0.2500 INCHES MINIMUM AND 0.2502 INCHES MAXIMUM IN
materialSTEEL CORROSION RESISTING OVERALL
drive_typeAIR PRESSURE
feed_quantity1
overall_length1.345 INCHES MINIMUM AND 1.355 INCHES MAXIMUM IN
reservoir_typeSINGLE
surface_finish63.0 MICROINCHES OVERALL
undercut_width0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
first_end_styleCHAMFERED
hardness_rating36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
undercut_radius0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
effective_length0.494 INCHES MINIMUM AND 0.514 INCHES MAXIMUM IN
NSN5315-00-461-4350
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1003251 · 3M ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FIRST END TAPER ANGLE: 30.0 DEGREES NOMINAL
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
FIRST END LOCATION: BOTH ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764 TYPE 416 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ESS 001 81873 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
EFFECTIVE LENGTH: 0.494 INCHES MINIMUM AND 0.514 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.345 INCHES MINIMUM AND 1.355 INCHES MAXIMUM IN
FIRST END TAPER ANGLE30.0 DEGREES NOMINAL
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
FIRST END LOCATIONBOTH ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764 TYPE 416 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONESS 001 81873 MFR REF SINGLE TREATMENT RESPONSE OVERALL
EFFECTIVE LENGTH0.494 INCHES MINIMUM AND 0.514 INCHES MAXIMUM IN
FIRST END STYLECHAMFERED
UNDERCUT RADIUS0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
70088REVAInterchangeable
interchangeable cross-reference
interchangeable
L606-02EInterchangeable
interchangeable cross-reference
interchangeable
1003251Interchangeable
interchangeable cross-reference
interchangeable
CV146068Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1003251?
1003251 is a MODULATOR,RADIO TRANSMITTER manufactured by 3M. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1003251?
There are 4 known substitutes for 1003251: 70088REVA, L606-02E, 1003251 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1003251?
1003251 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-461-4350. 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