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PartsTable / COMPONENT / 552957
552957 ✓ 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

SWITCH,RADIO FREQUENCY TRANSMISS. Key specifications include diameter: 0.250 INCHES NOMINAL IN, material: COPPER, construction: SEAMLESS, heat_treatment: ANNEALED, wall_thickness: 0.030 INCHES NOMINAL IN, first_end_style: PLAIN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-088-1607, 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
552957
NSN: 5306-00-088-1607
FSC: 5306
CAGE: 80256 — OUTBOARD MARINE CORP (USA)
SPECIFICATIONS
diameter0.250 INCHES NOMINAL IN
materialCOPPER
constructionSEAMLESS
heat_treatmentANNEALED
wall_thickness0.030 INCHES NOMINAL IN
first_end_stylePLAIN
special_featuresGRUMMAN; A10 AIRCRAFT
cross-sectional_shape_stylePLAIN ROUND
measuring_method_and_length300.000 INCHES NOMINAL SPECIFIC IN
nondefinitive_spec/std_data0 TEMPER
second_end_relationship_with_first_endIDENTICAL
NSN5306-00-088-1607
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 552957 · 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
•
FEATURES PROVIDED: FINISHED HEAD
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
THREAD CLASS: 2A A
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD LENGTH: 0.875 INCHES MINIMUM IN
•
HEAD HEIGHT: 0.109 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 18
TECHNICAL CHARACTERISTICS (FLIS)
FEATURES PROVIDEDFINISHED HEAD
NOMINAL THREAD DIAMETER0.312 INCHES IN
THREAD CLASS2A A
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.875 INCHES MINIMUM IN
HEAD HEIGHT0.109 INCHES NOMINAL IN
THREAD QUANTITY PER INCH18
GRIP LENGTH1.550 INCHES NOMINAL IN
HEAD STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
BB3338Interchangeable
interchangeable cross-reference
interchangeable
P4403Interchangeable
interchangeable cross-reference
interchangeable
1146PC167Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 552957?
552957 is a SWITCH,RADIO FREQUENCY TRANSMISS.
What parts can replace 552957?
There are 3 known substitutes for 552957: BB3338, P4403, 1146PC167. Substitute compatibility should be verified for your specific system.
What is the NSN for 552957?
552957 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-088-1607. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026