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PartsTable / COMPONENT / 906638
906638 ✓ 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

The GAGE,NOZZLE AREA,TU is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: GAGE, AREA STAGE 1 NOZZLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-653-6715, 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
906638
NSN: 5310-00-653-6715
FSC: 5310
CAGE: 43334 — GENERAL MOTORS CORP DELCO MORAINE NDH DIV (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyGAGE, AREA STAGE 1 NOZZLE
NSN5310-00-653-6715
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 906638 · 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
•
PERIPHERAL SHAPE STYLE: ROUND
•
THICKNESS: 0.250 INCHES NOMINAL IN
•
MATERIAL: WOOL OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
CENTER HOLE SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 2.500 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.250 INCHES NOMINAL IN
MATERIALWOOL OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER2.500 INCHES NOMINAL IN
HOLE DIAMETER0.438 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
21C5772P01Interchangeable
interchangeable cross-reference
interchangeable
904666Interchangeable
interchangeable cross-reference
interchangeable
906638Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 906638?
906638 is a GAGE,NOZZLE AREA,TU.
What parts can replace 906638?
There are 3 known substitutes for 906638: 21C5772P01, 904666, 906638. Substitute compatibility should be verified for your specific system.
What is the NSN for 906638?
906638 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-653-6715. 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