PartsTable
Technical Data Sheet
Download PDF

2C6551 — PIN,COTTER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2C6551: PIN,COTTER.

The PIN,COTTER is a the manufacturer industrial component. Key specifications include diameter: 0.250 INCHES NOMINAL IN, material: STEEL OVERALL, point_type: STANDARD, style_designator: STANDARD, underloop_length: 3.000 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-151-9052, 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
2C6551
NSN: 5315-00-151-9052
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 02614 — CASCADE CORP (USA)
SPECIFICATIONS
diameter0.250 INCHES NOMINAL IN
materialSTEEL OVERALL
point_typeSTANDARD
style_designatorSTANDARD
underloop_length3.000 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
NSN5315-00-151-9052
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2C6551 · 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: STANDARD
•
DIAMETER: 0.250 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
UNDERLOOP LENGTH: 3.000 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
POINT TYPE: STANDARD
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTANDARD
DIAMETER0.250 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
UNDERLOOP LENGTH3.000 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
POINT TYPESTANDARD
SUBSTITUTES & CROSS-REFERENCES 2
512Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
Y-512Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
Ready to buy 2C6551?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 2C6551?
2C6551 is a PIN,COTTER.
What parts can replace 2C6551?
There are 2 known substitutes for 2C6551: 512, Y-512. Substitute compatibility should be verified for your specific system.
What is the NSN for 2C6551?
2C6551 is cataloged in the U.S. Government catalog under NSN 5315-00-151-9052. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 2C6551

✓ 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.