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Technical Data Sheet
PartsTable / COMPONENT / 7540189
7540189 ✓ 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 PIN,STRAIGHT,HEADED is a the manufacturer industrial component. Key specifications include height: 0.250 INCHES NOMINAL IN, diameter: 0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, material: STEEL OVERALL, head_style: FLAT, style_designator: STRAIGHT, pin_head_diameter: 0.750 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-754-0189, 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
7540189
NSN: 5315-00-754-0189
FSC: 5315
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
height0.250 INCHES NOMINAL IN
diameter0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
materialSTEEL OVERALL
head_styleFLAT
style_designatorSTRAIGHT
pin_head_diameter0.750 INCHES NOMINAL IN
under_head_length4.312 INCHES NOMINAL IN
first_hole_diameter0.140 INCHES NOMINAL IN
hole_arrangement_styleONE END DRILLED
distance_from_centerline_of_hole_to_end_of_pin0.187 INCHES NOMINAL IN
NSN5315-00-754-0189
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7540189 · 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
•
PIN HEAD DIAMETER: 0.750 INCHES NOMINAL IN
•
HOLE ARRANGEMENT STYLE: ONE END DRILLED
•
FIRST HOLE DIAMETER: 0.140 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE OF HOLE TO END OF PIN: 0.187 INCHES NOMINAL IN
•
HEIGHT: 0.250 INCHES NOMINAL IN
•
UNDER HEAD LENGTH: 4.312 INCHES NOMINAL IN
•
HEAD STYLE: FLAT
•
DIAMETER: 0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
PIN HEAD DIAMETER0.750 INCHES NOMINAL IN
HOLE ARRANGEMENT STYLEONE END DRILLED
FIRST HOLE DIAMETER0.140 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE OF HOLE TO END OF PIN0.187 INCHES NOMINAL IN
HEIGHT0.250 INCHES NOMINAL IN
UNDER HEAD LENGTH4.312 INCHES NOMINAL IN
HEAD STYLEFLAT
DIAMETER0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
STYLE DESIGNATORSTRAIGHT
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
134-27171-01Interchangeable
interchangeable cross-reference
interchangeable
T110B21Interchangeable
interchangeable cross-reference
interchangeable
110E21Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7540189?
7540189 is a PIN,STRAIGHT,HEADED.
What parts can replace 7540189?
There are 3 known substitutes for 7540189: 134-27171-01, T110B21, 110E21. Substitute compatibility should be verified for your specific system.
What is the NSN for 7540189?
7540189 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-754-0189. 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