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031M0188DP — PIN,SPRING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

031M0188DP: PIN,SPRING.

The PIN,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.031 INCHES NOMINAL IN, material: STEEL COMP 302 OVERALL, overall_length: 0.187 INCHES NOMINAL IN, style_designator: COILED, expanded_diameter: 0.033 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-213-2479, 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
031M0188DP
NSN: 5315-01-213-2479
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 00287 — SPIROL INTERNATIONAL CORPORATION (USA)
SPECIFICATIONS
diameter0.031 INCHES NOMINAL IN
materialSTEEL COMP 302 OVERALL
overall_length0.187 INCHES NOMINAL IN
style_designatorCOILED
expanded_diameter0.033 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
NSN5315-01-213-2479
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 031M0188DP · 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
•
EXPANDED DIAMETER: 0.033 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: COILED
•
DIAMETER: 0.031 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 302 OVERALL
TECHNICAL CHARACTERISTICS
EXPANDED DIAMETER0.033 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
STYLE DESIGNATORCOILED
DIAMETER0.031 INCHES NOMINAL IN
OVERALL LENGTH0.187 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 302 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 1
69917-031M1875SReference document
Same NSN cross-reference
Reference document — Vendor item drawing 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 031M0188DP?
031M0188DP is a PIN,SPRING.
What parts can replace 031M0188DP?
There is 1 known substitute for 031M0188DP: 69917-031M1875S. Substitute compatibility should be verified for your specific system.
What is the NSN for 031M0188DP?
031M0188DP is cataloged in the U.S. Government catalog under NSN 5315-01-213-2479. 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.