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4340-0643-000 — PIN,SPRING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4340-0643-000: PIN,SPRING.

The PIN,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN, material: COPPER ALLOY 170 OR COPPER ALLOY 172 OVERALL, overall_length: 0.167 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN, style_designator: SLOTTED, material_thickness: 0.007 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-843-0449, 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
4340-0643-000
NSN: 5315-00-843-0449
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 91341 — MICHEL AND PELTON CO (USA)
SPECIFICATIONS
diameter0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
materialCOPPER ALLOY 170 OR COPPER ALLOY 172 OVERALL
overall_length0.167 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
style_designatorSLOTTED
material_thickness0.007 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN
NSN5315-00-843-0449
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4340-0643-000 · 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: SLOTTED
•
DIAMETER: 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.007 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY 170 OR COPPER ALLOY 172 OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSLOTTED
DIAMETER0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
OVERALL LENGTH0.167 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
MATERIAL THICKNESS0.007 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY 170 OR COPPER ALLOY 172 OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
340-0643-000Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
340-0643-00Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
BRYLM COP, 0.21 5DX0.187LReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4340-0643-000?
4340-0643-000 is a PIN,SPRING.
What parts can replace 4340-0643-000?
There are 3 known substitutes for 4340-0643-000: 340-0643-000, 340-0643-00, BRYLM COP, 0.21 5DX0.187L. Substitute compatibility should be verified for your specific system.
What is the NSN for 4340-0643-000?
4340-0643-000 is cataloged in the U.S. Government catalog under NSN 5315-00-843-0449. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.