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7188774 — PIN,SPRING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7188774: PIN,SPRING.

The PIN,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.184 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN, material: STEEL COMP 1340 AND STEEL COMP 4140 AND STEEL COMP 8640 AND STEEL OVERALL, grip_length: 3.110 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES OVERALL, fastener_length: 4.407 INCHES MINIMUM AND 4.409 INCHES MAXIMUM IN, surface_treatment: PHOSPHATE ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-718-8774, 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
7188774
NSN: 5315-00-718-8774
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 19204 — ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC (USA)
SPECIFICATIONS
diameter0.184 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN
materialSTEEL COMP 1340 AND STEEL COMP 4140 AND STEEL COMP 8640 AND STEEL OVERALL
grip_length3.110 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES OVERALL
fastener_length4.407 INCHES MINIMUM AND 4.409 INCHES MAXIMUM IN
surface_treatmentPHOSPHATE ZINC OVERALL
NSN5315-00-718-8774
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7188774 · 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
•
SURFACE FINISH: 125.0 MICROINCHES OVERALL
•
FASTENER LENGTH: 4.407 INCHES MINIMUM AND 4.409 INCHES MAXIMUM IN
•
DIAMETER: 0.184 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN
•
GRIP LENGTH: 3.110 INCHES NOMINAL IN
•
SURFACE TREATMENT: PHOSPHATE ZINC OVERALL
•
MATERIAL: STEEL COMP 1340 AND STEEL COMP 4140 AND STEEL COMP 8640 AND STEEL OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES OVERALL
FASTENER LENGTH4.407 INCHES MINIMUM AND 4.409 INCHES MAXIMUM IN
DIAMETER0.184 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN
GRIP LENGTH3.110 INCHES NOMINAL IN
SURFACE TREATMENTPHOSPHATE ZINC OVERALL
MATERIALSTEEL COMP 1340 AND STEEL COMP 4140 AND STEEL COMP 8640 AND STEEL 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
5315007188774Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7188774?
7188774 is a PIN,SPRING.
What parts can replace 7188774?
There is 1 known substitute for 7188774: 5315007188774. Substitute compatibility should be verified for your specific system.
What is the NSN for 7188774?
7188774 is cataloged in the U.S. Government catalog under NSN 5315-00-718-8774. 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.