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12440533 — PIN,SPRING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12440533: PIN,SPRING.

The PIN,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.190 INCHES NOMINAL IN, material: STEEL OVERALL, overall_length: 2.000 INCHES NOMINAL IN, style_designator: SLOTTED, material_thickness: 0.110 INCHES NOMINAL IN, end_item_identification: 3990-01-444-6174 BITUM DISTRIBUTOR; 3990-01-406-1340 IMPROVED PLS FLATRACK. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-422-3900, 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
12440533
NSN: 5315-01-422-3900
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
diameter0.190 INCHES NOMINAL IN
materialSTEEL OVERALL
overall_length2.000 INCHES NOMINAL IN
style_designatorSLOTTED
material_thickness0.110 INCHES NOMINAL IN
end_item_identification3990-01-444-6174 BITUM DISTRIBUTOR; 3990-01-406-1340 IMPROVED PLS FLATRACK
NSN5315-01-422-3900
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12440533 · 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: 0.190 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.110 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSLOTTED
DIAMETER0.190 INCHES NOMINAL IN
OVERALL LENGTH2.000 INCHES NOMINAL IN
MATERIAL THICKNESS0.110 INCHES NOMINAL IN
END ITEM IDENTIFICATION3990-01-444-6174 BITUM DISTRIBUTOR; 3990-01-406-1340 IMPROVED PLS FLATRACK
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES 2
3HD594Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
12R00PRPReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12440533?
12440533 is a PIN,SPRING.
What parts can replace 12440533?
There are 2 known substitutes for 12440533: 3HD594, 12R00PRP. Substitute compatibility should be verified for your specific system.
What is the NSN for 12440533?
12440533 is cataloged in the U.S. Government catalog under NSN 5315-01-422-3900. 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.