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MS17985-421 — PIN,QUICK RELEASE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS17985-421: PIN,QUICK RELEASE.

The PIN,QUICK RELEASE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 SPINDLE, grip_length: 2.100 INCHES MINIMUM AND 2.120 INCHES MAXIMUM IN, handle_length: 1.750 INCHES MINIMUM AND 1.815 INCHES MAXIMUM IN, actuation_type: PUSH, shank_diameter: 0.2470 INCHES MINIMUM AND 0.2485 INCHES MAXIMUM IN, shear_strength: 8200 DOUBLE POUND. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-702-1099, 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
MS17985-421
NSN: 5315-00-702-1099
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 SPINDLE
grip_length2.100 INCHES MINIMUM AND 2.120 INCHES MAXIMUM IN
handle_length1.750 INCHES MINIMUM AND 1.815 INCHES MAXIMUM IN
actuation_typePUSH
shank_diameter0.2470 INCHES MINIMUM AND 0.2485 INCHES MAXIMUM IN
shear_strength8200 DOUBLE POUND
detent_quantity2
hardness_rating36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM SHANK
actuation_methodPUSH BUTTON
style_designatorT HANDLE
surface_treatmentCADMIUM AND CHROMATE SHANK
pin_attachment_typeHOOK OR RING
NSN5315-00-702-1099
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS17985-421 · 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: 0.2470 INCHES MINIMUM AND 0.2485 INCHES MAXIMUM IN
•
ACTUATION METHOD: PUSH BUTTON
•
DETENT TO TAPERED END DISTANCE: 0.260 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
•
DETENT QUANTITY: 2
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE SPINDLE
•
HANDLE LENGTH: 1.750 INCHES MINIMUM AND 1.815 INCHES MAXIMUM IN
•
ACTUATION TYPE: PUSH
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.2470 INCHES MINIMUM AND 0.2485 INCHES MAXIMUM IN
ACTUATION METHODPUSH BUTTON
DETENT TO TAPERED END DISTANCE0.260 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
DETENT QUANTITY2
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE SPINDLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE SHANK
HANDLE LENGTH1.750 INCHES MINIMUM AND 1.815 INCHES MAXIMUM IN
ACTUATION TYPEPUSH
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM SHANK
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM SPINDLE
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 5
SLS4AT21Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LG4ST2100Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
BLS4TA21SMSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LG4ST21MSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
902S4-21Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 MS17985-421?
MS17985-421 is a PIN,QUICK RELEASE.
What parts can replace MS17985-421?
There are 5 known substitutes for MS17985-421: SLS4AT21, LG4ST2100, BLS4TA21SM and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS17985-421?
MS17985-421 is cataloged in the U.S. Government catalog under NSN 5315-00-702-1099. 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.