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195711 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

195711: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 310 OVERALL, hole_diameter: 0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN, outside_diameter: 0.520 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN, split_key_length: 0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-331-9195, 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
195711
NSN: 5310-00-331-9195
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 310 OVERALL
hole_diameter0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
outside_diameter0.520 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN
split_key_length0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
external_key_quantity1
external_prebent_key_angle20.0 DEGREES MINIMUM AND 40.0 DEGREES MAXIMUM
external_prebent_key_width0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
external_tapered_key_width0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
angle_between_external_keys58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM
external_prebent_key_length0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
NSN5310-00-331-9195
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 195711 · 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
•
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY: 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
•
SPLIT KEY LENGTH: 0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
•
EXTERNAL PREBENT KEY LENGTH: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 0.789 INCHES MINIMUM AND 0.809 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5521 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.520 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN
•
EXTERNAL TAPERED KEY WIDTH: 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
SPLIT KEY LENGTH0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY LENGTH0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS0.789 INCHES MINIMUM AND 0.809 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5521 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.520 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN
EXTERNAL TAPERED KEY WIDTH0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
MATERIAL THICKNESS0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
EXTERNAL STRAIGHT KEY WIDTH0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 195711?
195711 is a WASHER,KEY.
What is the NSN for 195711?
195711 is cataloged in the U.S. Government catalog under NSN 5310-00-331-9195. This indicates validated use in U.S. government and defense supply chains.
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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.