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Technical Data Sheet
121900 ✓ Verified by PartsTable
Hama · 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

The VALVE,SOLENOID is a Hama industrial component. Key specifications include material: COPPER ALLOY 360 BODY, connection_type: UNTHREADED INTERNAL TUBE FIRST END, nominal_thread_size: 0.250 INCHES SECOND END IN, end_item_identification: USED ON BISON LIGHT ARMORED VEHICLE AIR BRAKE, thread_series_designator: NPTF SECOND END, nominal_outside_diameter_tube_accommodated: 0.375 INCHES FIRST END IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-012-1900, 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
121900
NSN: 5305-00-012-1900
FSC: 5305
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 BODY
connection_typeUNTHREADED INTERNAL TUBE FIRST END
nominal_thread_size0.250 INCHES SECOND END IN
end_item_identificationUSED ON BISON LIGHT ARMORED VEHICLE AIR BRAKE
thread_series_designatorNPTF SECOND END
specification/standard_data81343-SAE J2492-1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 81343-2494-3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
nominal_outside_diameter_tube_accommodated0.375 INCHES FIRST END IN
NSN5305-00-012-1900
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 121900 · Hama ⚠ 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
THREAD CLASS: 2A A
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
MATERIAL: STEEL OVERALL
HARDNESS RATING: 100.0 ROCKWELL B MAXIMUM OVERALL
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 10P STYLE AND 2 GRADE
MINIMUM YIELD STRENGTH: 55000 POUNDS PER SQUARE INCH LBS
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A A
NOMINAL THREAD DIAMETER0.250 INCHES IN
MATERIALSTEEL OVERALL
HARDNESS RATING100.0 ROCKWELL B MAXIMUM OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE AND 2 GRADE
MINIMUM YIELD STRENGTH55000 POUNDS PER SQUARE INCH LBS
HEAD STYLEHEXAGON
SURFACE TREATMENTCADMIUM OVERALL
FASTENER LENGTH1.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
6477-32Interchangeable
interchangeable cross-reference
interchangeable
50055Interchangeable
interchangeable cross-reference
interchangeable
S1616Interchangeable
interchangeable cross-reference
interchangeable
101982Interchangeable
interchangeable cross-reference
interchangeable
2642-24850-T194Interchangeable
interchangeable cross-reference
interchangeable
12-1900Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121900?
121900 is a VALVE,SOLENOID manufactured by Hama.
What parts can replace 121900?
There are 11 known substitutes for 121900: 6477-32, 50055, S1616 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121900?
121900 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-012-1900. This indicates validated use in U.S. government and defense supply chains.
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