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400-309 ITEM 43 — Technical Data Sheet

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— · 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: 0.080 INCHES NOMINAL IN, diameter: 0.250 INCHES NOMINAL IN, head_style: DRIVE, pin_head_diameter: 0.370 INCHES NOMINAL IN, under_head_length: 1.750 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5315-01-084-4395, 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
400-309 ITEM 43
NSN: 5315-01-084-4395
FSC: 5315
CAGE: 52032 — BIOMARINE INC (USA)
SPECIFICATIONS
height0.080 INCHES NOMINAL IN
diameter0.250 INCHES NOMINAL IN
head_styleDRIVE
pin_head_diameter0.370 INCHES NOMINAL IN
under_head_length1.750 INCHES NOMINAL IN
NSN5315-01-084-4395
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 400-309 ITEM 43 · 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: 0.370 INCHES NOMINAL IN
•
HEIGHT: 0.080 INCHES NOMINAL IN
•
DIAMETER: 0.250 INCHES NOMINAL IN
•
HEAD STYLE: DRIVE
•
UNDER HEAD LENGTH: 1.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
PIN HEAD DIAMETER0.370 INCHES NOMINAL IN
HEIGHT0.080 INCHES NOMINAL IN
DIAMETER0.250 INCHES NOMINAL IN
HEAD STYLEDRIVE
UNDER HEAD LENGTH1.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
100772InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
332-2345-420InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MS51953-97InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
905-04909InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
989110-34BInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
17245InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 400-309 ITEM 43?
400-309 ITEM 43 is a PIN,STRAIGHT,HEADED.
What parts can replace 400-309 ITEM 43?
There are 10 known substitutes for 400-309 ITEM 43: 100772, 332-2345-420, MS51953-97 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 400-309 ITEM 43?
400-309 ITEM 43 is cataloged in the Federal Logistics Information System under NSN 5315-01-084-4395. 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: September 2026