PartsTable
Technical Data Sheet
PartsTable / COMPONENT / X7-28
X7-28 ✓ 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 WASHER,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN, outside_diameter: 0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, material_thickness: 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-011-5545, 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
X7-28
NSN: 5310-00-011-5545
FSC: 5310
CAGE: 15586 — CUSHMAN INC A RANSOM CO POBOX 7248 CHARLOTTE NC 28241 7248 (USA)
SPECIFICATIONS
hole_diameter0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
outside_diameter0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
material_thickness0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
NSN5310-00-011-5545
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: X7-28 · 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
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
HOLE DIAMETER: 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORFLAT INTERNAL TEETH
HOLE DIAMETER0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
MATERIAL THICKNESS0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
X1270Interchangeable
interchangeable cross-reference
interchangeable
210-3191Interchangeable
interchangeable cross-reference
interchangeable
MILR3065Interchangeable
interchangeable cross-reference
interchangeable
138073Interchangeable
interchangeable cross-reference
interchangeable
P36Interchangeable
interchangeable cross-reference
interchangeable
10424334Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy X7-28?
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 X7-28?
X7-28 is a WASHER,LOCK.
What parts can replace X7-28?
There are 27 known substitutes for X7-28: X1270, 210-3191, MILR3065 and 24 more. Substitute compatibility should be verified for your specific system.
Is X7-28 still available?
X7-28 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 — X7-28

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