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Technical Data Sheet
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91045A040 — 91045A040

✓ Government record, cited
MCMASTER-CARR SUPPLY CO · NUT WASHER
PRODUCT OVERVIEW

91045A040: 91045A040.

The 91045A040 is a MCMASTER-CARR SUPPLY CO industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-01-455-4112, 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
91045A040
NSN: 5310-01-455-4112
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
Part Number91045A040
ManufacturerMCMASTER-CARR SUPPLY CO
NSN5310-01-455-4112
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91045A040 · MCMASTER-CARR SUPPLY CO ⚠ 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
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
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NOMINAL THREAD SIZE: 1.250 INCHES IN
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THREAD CLASS: 2B
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THREAD QUANTITY PER INCH: 7
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.250 INCHES IN
THREAD CLASS2B
THREAD QUANTITY PER INCH7
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91045A040?
91045A040 is a 91045A040 manufactured by MCMASTER-CARR SUPPLY CO.
What is the NSN for 91045A040?
91045A040 is cataloged in the U.S. Government catalog under NSN 5310-01-455-4112. This indicates validated use in U.S. government and defense supply chains.
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