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Technical Data Sheet

MIL-B-19257 — Technical Data Sheet

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WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE BODY, thread_class: 2B, thread_length: 0.188 INCHES NOMINAL IN, thread_series: UNEF, overall_height: 0.547 INCHES NOMINAL IN, sealing_method: MECHANICAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5930-00-578-2717, 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
MIL-B-19257
NSN: 5930-00-578-2717
FSC: 5930
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialRUBBER SILICONE BODY
thread_class2B
thread_length0.188 INCHES NOMINAL IN
thread_seriesUNEF
overall_height0.547 INCHES NOMINAL IN
sealing_methodMECHANICAL
mounting_methodINTEGRAL THREADED NUT
style_designatorCLOSED END
width_across_flats0.625 INCHES NOMINAL IN
nominal_thread_size0.375 INCHES IN
base_thread_locationINTERNAL
body_outside_diameter0.500 INCHES NOMINAL IN
NSN5930-00-578-2717
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BOOT,DUST AND MOISTURE SEAL TITLE COMPONENT PN MIL-B-19257 MFR BOOT,DUST AND MOISTURE
KEY FEATURES
•
MATERIAL DOCUMENT AND CLASSIFICATION: ZZ-R-765,CLASS 1B,GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE BODY
•
THREAD LENGTH: 0.176 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CLOSED END
•
MATERIAL: RUBBER SILICONE BODY
•
THREAD SERIES: UNS
•
OPENING INSIDE DIAMETER: 0.125 INCHES NOMINAL IN
•
NONDEFINITIVE SPEC/STD DATA: 1 STYLE AND A TYPE
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765,CLASS 1B,GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE BODY
THREAD LENGTH0.176 INCHES NOMINAL IN
STYLE DESIGNATORCLOSED END
MATERIALRUBBER SILICONE BODY
THREAD SERIESUNS
OPENING INSIDE DIAMETER0.125 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA1 STYLE AND A TYPE
OVERALL HEIGHT0.844 INCHES NOMINAL IN
SEALING METHODMECHANICAL
MOUNTING METHODTHREAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
9167481InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
TYPECCLASSISIZE2InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
NC3030-REDInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
TYPEBSTYLE2SIZE1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-B-19257?
MIL-B-19257 is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace MIL-B-19257?
There are 4 known substitutes for MIL-B-19257: 9167481, TYPECCLASSISIZE2, NC3030-RED and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-B-19257?
MIL-B-19257 is cataloged in the Federal Logistics Information System under NSN 5930-00-578-2717. This indicates validated use in U.S. government and defense supply chains.
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