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Technical Data Sheet
1SM18B ✓ Verified by PartsTable
· COMPONENT
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 ADJUSTER,SLACK,BRAKE is a the manufacturer industrial component. Key specifications include shape: STRAIGHT, spline_type: STRAIGHT SPLINE, hole_diameter: 0.501 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN, major_diameter: 1.499 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN, minor_diameter: 1.214 INCHES MINIMUM AND 1.215 INCHES MAXIMUM IN, adjustment_type: SINGLE ARM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2530-00-700-1732, 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
1SM18B
NSN: 2530-00-700-1732
FSC: 2530
CAGE: 76040 — MACK TRUCKS INC PARTS OPN (USA)
SPECIFICATIONS
shapeSTRAIGHT
spline_typeSTRAIGHT SPLINE
hole_diameter0.501 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
major_diameter1.499 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
minor_diameter1.214 INCHES MINIMUM AND 1.215 INCHES MAXIMUM IN
adjustment_typeSINGLE ARM
offset_distance1.500 INCHES NOMINAL IN
spline_quantity10
offset_directionRIGHT
thread_directionRIGHT-HAND
torque_load_rating22000.000 INCH-POUNDS IN
locking_device_typeSPRING LOADED PLUNGER
NSN2530-00-700-1732
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ADJUSTER,SLACK,BRAKE TITLE COMPONENT PN 1SM18B MFR ADJUSTER,SLACK,BRAKE
KEY FEATURES
OFFSET DISTANCE: 1.500 INCHES NOMINAL IN
CONNECTING ARM HOLE QUANTITY: 1
FSC APPLICATION DATA: AIR BRAKE GROUP,TRUCK CHASSIS
MINOR DIAMETER: 1.214 INCHES MINIMUM AND 1.215 INCHES MAXIMUM IN
SCREW THREAD SERIES DESIGNATOR: NPT
THREAD DIRECTION: RIGHT-HAND
THREAD SIZE DESIGNATOR: 0.125-27
TORQUE LOAD RATING: 22000.000 INCH-POUNDS IN
TECHNICAL CHARACTERISTICS (FLIS)
OFFSET DISTANCE1.500 INCHES NOMINAL IN
CONNECTING ARM HOLE QUANTITY1
FSC APPLICATION DATAAIR BRAKE GROUP,TRUCK CHASSIS
MINOR DIAMETER1.214 INCHES MINIMUM AND 1.215 INCHES MAXIMUM IN
SCREW THREAD SERIES DESIGNATORNPT
THREAD DIRECTIONRIGHT-HAND
THREAD SIZE DESIGNATOR0.125-27
TORQUE LOAD RATING22000.000 INCH-POUNDS IN
CONNECTING ARM THICKNESS0.517 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
ADJUSTMENT TYPESINGLE ARM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
4188-19Interchangeable
interchangeable cross-reference
interchangeable
97-0689Interchangeable
interchangeable cross-reference
interchangeable
221176Interchangeable
interchangeable cross-reference
interchangeable
4321176Interchangeable
interchangeable cross-reference
interchangeable
3078FInterchangeable
interchangeable cross-reference
interchangeable
31TA72Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1SM18B?
1SM18B is a ADJUSTER,SLACK,BRAKE.
What parts can replace 1SM18B?
There are 8 known substitutes for 1SM18B: 4188-19, 97-0689, 221176 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1SM18B?
1SM18B is cataloged in the Federal Logistics Information System (FLIS) under NSN 2530-00-700-1732. This indicates validated use in U.S. government and defense supply chains.
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