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90170A550 — PIN,QUICK RELEASE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

90170A550: PIN,QUICK RELEASE.

The PIN,QUICK RELEASE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_height: 0.375 INCHES NOMINAL IN, head_length: 0.625 INCHES NOMINAL IN, lanyard_length: 2.0 INCHES NOMINAL IN, shank_diameter: 0.4375 INCHES NOMINAL IN, hardness_rating: 81.0 ROCKWELL B MINIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-680-4273, 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
90170A550
NSN: 5315-01-680-4273
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_height0.375 INCHES NOMINAL IN
head_length0.625 INCHES NOMINAL IN
lanyard_length2.0 INCHES NOMINAL IN
shank_diameter0.4375 INCHES NOMINAL IN
hardness_rating81.0 ROCKWELL B MINIMUM OVERALL
special_featuresPIN TYPE LOCKING RING, ROHS COMPLIANT, HANDLE STYLE RING, USABLE LENGTH 1 1/2 INCHES IN
style_designatorRING HANDLE
surface_treatmentZINC OVERALL
part_name_assigned_by_controlling_agencyLOCKING PIN WITH RING
NSN5315-01-680-4273
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90170A550 · 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
•
SHANK DIAMETER: 0.4375 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.375 INCHES NOMINAL IN
•
HEAD LENGTH: 0.625 INCHES NOMINAL IN
•
HARDNESS RATING: 81.0 ROCKWELL B MINIMUM OVERALL
•
STYLE DESIGNATOR: RING HANDLE
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.4375 INCHES NOMINAL IN
HEAD HEIGHT0.375 INCHES NOMINAL IN
HEAD LENGTH0.625 INCHES NOMINAL IN
HARDNESS RATING81.0 ROCKWELL B MINIMUM OVERALL
STYLE DESIGNATORRING HANDLE
SPECIAL FEATURESPIN TYPE LOCKING RING, ROHS COMPLIANT, HANDLE STYLE RING, USABLE LENGTH 1 1/2 INCHES IN
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYLOCKING PIN WITH RING
MATERIALSTEEL OVERALL
LANYARD LENGTH2.0 INCHES NOMINAL IN
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90170A550?
90170A550 is a PIN,QUICK RELEASE.
What is the NSN for 90170A550?
90170A550 is cataloged in the U.S. Government catalog under NSN 5315-01-680-4273. 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.