PartsTable
Technical Data Sheet
PartsTable / MRO / S665
S665 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include degasser: INCLUDED, governor: NOT INCLUDED, material: STEEL BODY, float_type: DOUBLE, head_style: FLAT, slot_width: 0.1580 INCHES MINIMUM AND 0.1620 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-226-5978, 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
MRO→ MRO_GENERAL→ S665
NSN: 5310-00-226-5978
FSC: 5310
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
degasserINCLUDED
governorNOT INCLUDED
materialSTEEL BODY
float_typeDOUBLE
head_styleFLAT
slot_width0.1580 INCHES MINIMUM AND 0.1620 INCHES MAXIMUM IN
stem_styleSLOTTED
body_length3.500 INCHES MAXIMUM IN
head_height0.2010 INCHES MINIMUM AND 0.2210 INCHES MAXIMUM IN
neck_radius0.4375 INCHES NOMINAL IN
slot_length0.3300 INCHES MINIMUM AND 0.3380 INCHES MAXIMUM IN
slot_radius0.0790 INCHES MINIMUM AND 0.0810 INCHES MAXIMUM IN
NSN5310-00-226-5978
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: S665 · 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: KEY
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY2 CL3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 TY2 CL3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
INTERNAL PREBENT KEY WIDTH: 0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 11
•
MATERIAL: STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1026 OR STEEL COMP 1527 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1035 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OVERALL
•
MATERIAL THICKNESS: 0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 1.531 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORKEY
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY2 CL3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 TY2 CL3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
INTERNAL PREBENT KEY WIDTH0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY11
MATERIALSTEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1026 OR STEEL COMP 1527 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1035 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OVERALL
MATERIAL THICKNESS0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS1.531 INCHES MAXIMUM IN
HARDNESS RATING50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
EXTERNAL PREBENT KEY WIDTH0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
1509-6Interchangeable
interchangeable cross-reference
interchangeable
M24135/1-06Interchangeable
interchangeable cross-reference
interchangeable
MIL-H-24135-6CLInterchangeable
interchangeable cross-reference
interchangeable
16755Interchangeable
interchangeable cross-reference
interchangeable
1906-0006Interchangeable
interchangeable cross-reference
interchangeable
PF40Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy S665?
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 S665?
S665 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What parts can replace S665?
There are 32 known substitutes for S665: 1509-6, M24135/1-06, MIL-H-24135-6CL and 29 more. Substitute compatibility should be verified for your specific system.
Is S665 still available?
S665 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — S665

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026