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Technical Data Sheet
PartsTable / COMPONENT / 373029
373029 ✓ Verified by PartsTable
— · NUT WASHER
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

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: RUBBER SYNTHETIC OVERALL, thickness: 0.031 INCHES NOMINAL IN, hole_diameter: 0.156 INCHES NOMINAL IN, hardness_rating: 65.0 DUROMETER NOMINAL, overall_diameter: 0.312 INCHES NOMINAL IN, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-443-6930, 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
373029
NSN: 5310-00-443-6930
FSC: 5310
CAGE: 89305 — SIMMONDS PRECISION PRODUCTS INC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
thickness0.031 INCHES NOMINAL IN
hole_diameter0.156 INCHES NOMINAL IN
hardness_rating65.0 DUROMETER NOMINAL
overall_diameter0.312 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-443-6930
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 373029 · OEM ⚠ 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
•
HARDNESS RATING: 65.0 DUROMETER NOMINAL
•
CENTER HOLE SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 0.312 INCHES NOMINAL IN
•
THICKNESS: 0.031 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.156 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING65.0 DUROMETER NOMINAL
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER0.312 INCHES NOMINAL IN
THICKNESS0.031 INCHES NOMINAL IN
HOLE DIAMETER0.156 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
MATERIALRUBBER SYNTHETIC OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
25-A-0389Interchangeable
interchangeable cross-reference
interchangeable
44Z43D1Interchangeable
interchangeable cross-reference
interchangeable
215954Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 373029?
373029 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace 373029?
There are 3 known substitutes for 373029: 25-A-0389, 44Z43D1, 215954. Substitute compatibility should be verified for your specific system.
Is 373029 still available?
373029 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026