PartsTable
Technical Data Sheet
PartsTable / COMPONENT / BB27158
BB27158 ✓ 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,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OVERALL, thickness: 0.344 INCHES NOMINAL IN, hole_diameter: 1.031 INCHES NOMINAL IN, overall_diameter: 2.750 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-262-4711, 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
BB27158
NSN: 5310-00-262-4711
FSC: 5310
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OVERALL
thickness0.344 INCHES NOMINAL IN
hole_diameter1.031 INCHES NOMINAL IN
overall_diameter2.750 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classification-AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-262-4711
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BB27158 · 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
•
MATERIAL: STEEL COMP 1020 OVERALL
•
HOLE DIAMETER: 1.031 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: -AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
PERIPHERAL SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 2.750 INCHES NOMINAL IN
•
THICKNESS: 0.344 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 1020 OVERALL
HOLE DIAMETER1.031 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION-AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CENTER HOLE SHAPE STYLEROUND
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER2.750 INCHES NOMINAL IN
THICKNESS0.344 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
SK1744DPC22Interchangeable
interchangeable cross-reference
interchangeable
H9121-1Interchangeable
interchangeable cross-reference
interchangeable
9121-1Interchangeable
interchangeable cross-reference
interchangeable
4-1809Interchangeable
interchangeable cross-reference
interchangeable
1664361Interchangeable
interchangeable cross-reference
interchangeable
9044-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy BB27158?
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 BB27158?
BB27158 is a WASHER,FLAT.
What parts can replace BB27158?
There are 10 known substitutes for BB27158: SK1744DPC22, H9121-1, 9121-1 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BB27158?
BB27158 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-262-4711. This indicates validated use in U.S. government and defense supply chains.
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 — BB27158

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