PartsTable
Technical Data Sheet
PartsTable / COMPONENT / X108
X108 ✓ 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

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include scale_type: ETCHED STEM, design_type: FLUCTUATING, hole_diameter: 0.255 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN, overall_length: 6.125 INCHES NOMINAL IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM, actuating_medium: MERCURY. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-010-3319, 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
X108
NSN: 5310-00-010-3319
FSC: 5310
CAGE: 03092 — AMERICAN TRACTOR EQUIPMENT CORP (USA)
SPECIFICATIONS
scale_typeETCHED STEM
design_typeFLUCTUATING
hole_diameter0.255 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
overall_length6.125 INCHES NOMINAL IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
actuating_mediumMERCURY
outside_diameter0.489 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
securing_device_typeRING
armor_encased_tip_typePERFORATED
scale_smallest_increment1.0 DEG CELSIUS
NSN5310-00-010-3319
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: X108 · 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: 2 STYLE AND A CLASS
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OR AISI NATIONAL SPEC ALL MATERIAL RESPONSES OR SAE NATIONAL SPEC ALL MATERIAL RESPONSES OVERALL
•
MATERIAL THICKNESS: 0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
OUTSIDE DIAMETER: 0.489 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.255 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATA2 STYLE AND A CLASS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OR AISI NATIONAL SPEC ALL MATERIAL RESPONSES OR SAE NATIONAL SPEC ALL MATERIAL RESPONSES OVERALL
MATERIAL THICKNESS0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
OUTSIDE DIAMETER0.489 INCHES MAXIMUM IN
HOLE DIAMETER0.255 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
4662Interchangeable
interchangeable cross-reference
interchangeable
256-0179-010Interchangeable
interchangeable cross-reference
interchangeable
34845S7S8Interchangeable
interchangeable cross-reference
interchangeable
12X199Interchangeable
interchangeable cross-reference
interchangeable
X1022Interchangeable
interchangeable cross-reference
interchangeable
379Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy X108?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is X108?
X108 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What parts can replace X108?
There are 26 known substitutes for X108: 4662, 256-0179-010, 34845S7S8 and 23 more. Substitute compatibility should be verified for your specific system.
Is X108 still available?
X108 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — X108

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026