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Technical Data Sheet
PartsTable / COMPONENT / 51561
51561 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

FILTER ELEMENT,INTAKE AIR CLEANE. Key specifications include height: 0.875 INCHES NOMINAL IN, material: ALUMINUM OVERALL, body_width: 1.050 INCHES MAXIMUM IN, drive_type: DIRECT, scale_type: LINEAR SINGLE SCALE, body_height: 0.250 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-269-6699, 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
51561
NSN: 5307-00-269-6699
FSC: 5307
CAGE: 93334 — ATWOOD FENCE CO INC (USA)
SPECIFICATIONS
height0.875 INCHES NOMINAL IN
materialALUMINUM OVERALL
body_width1.050 INCHES MAXIMUM IN
drive_typeDIRECT
scale_typeLINEAR SINGLE SCALE
body_height0.250 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
body_length1.573 INCHES MAXIMUM IN
drum_height0.875 INCHES NOMINAL IN
thread_class2A NUT THREAD A
end_item_nameCONTROL VALVE
thread_length0.281 INCHES NOMINAL STUD THREAD IN
overall_length1.756 INCHES NOMINAL IN
NSN5307-00-269-6699
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 51561 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: STEEL
•
THREAD QUANTITY PER INCH: 24 NUT THREAD
•
THREAD CLASS: 2A NUT THREAD A
•
THREAD DIRECTION: RIGHT-HAND NUT THREAD
•
NOMINAL THREAD SIZE: 0.375 INCHES STUD THREAD IN
•
THREAD SERIES DESIGNATOR: UNS STUD THREAD
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
THREAD QUANTITY PER INCH24 NUT THREAD
OVERALL LENGTH1.750 INCHES NOMINAL IN
THREAD CLASS2A NUT THREAD A
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.375 INCHES STUD THREAD IN
THREAD QUANTITY PER INCH16 STUD THREAD
THREAD SERIES DESIGNATORUNS STUD THREAD
THREAD SERIES DESIGNATORUNF NUT THREAD
THREAD DIRECTIONRIGHT-HAND STUD THREAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
9-65820Interchangeable
interchangeable cross-reference
interchangeable
51561Interchangeable
interchangeable cross-reference
interchangeable
SC-B-69988Interchangeable
interchangeable cross-reference
interchangeable
51260Interchangeable
interchangeable cross-reference
interchangeable
911411-13Interchangeable
interchangeable cross-reference
interchangeable
CAK256Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51561?
51561 is a FILTER ELEMENT,INTAKE AIR CLEANE.
What parts can replace 51561?
There are 16 known substitutes for 51561: 9-65820, 51561, SC-B-69988 and 13 more. Substitute compatibility should be verified for your specific system.
Is 51561 still available?
51561 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026