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3/8/X1/4 — Technical Data Sheet

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— · 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

SEAL ASSEMBLY,SHAFT,SPRING LOADE. Key specifications include general_characteristics_item_description: CONSISTS OF ONE EA STATIONARY SEAL; COMPRESSOR SPRING; SEAT,SPRING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5315-00-010-8630, 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
3/8/X1/4
NSN: 5315-00-010-8630
FSC: 5315
CAGE: 76894 — CELTRAC CORP (USA)
SPECIFICATIONS
general_characteristics_item_descriptionCONSISTS OF ONE EA STATIONARY SEAL; COMPRESSOR SPRING; SEAT,SPRING
NSN5315-00-010-8630
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3/8/X1/4 · 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
•
NONDEFINITIVE SPEC/STD DATA: B TYPE AND 4 CLASS
•
MATERIAL: STEEL OVERALL
•
DIAMETER: 0.125 INCHES NOMINAL IN
•
UNDERLOOP LENGTH: 0.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STANDARD
TECHNICAL CHARACTERISTICS
NONDEFINITIVE SPEC/STD DATAB TYPE AND 4 CLASS
MATERIALSTEEL OVERALL
DIAMETER0.125 INCHES NOMINAL IN
UNDERLOOP LENGTH0.875 INCHES NOMINAL IN
STYLE DESIGNATORSTANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
103326InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MS35338-13InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
130MAW1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
X-113InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
F2647InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1619280InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3/8/X1/4?
3/8/X1/4 is a SEAL ASSEMBLY,SHAFT,SPRING LOADE.
What parts can replace 3/8/X1/4?
There are 23 known substitutes for 3/8/X1/4: 103326, MS35338-13, 130MAW1 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3/8/X1/4?
3/8/X1/4 is cataloged in the Federal Logistics Information System under NSN 5315-00-010-8630. 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: October 2026