PartsTable
Technical Data Sheet
103-8S ✓ 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

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE, seat_angle: 37.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARED (TUBE) ALL ENDS, style_designator: STRAIGHT THRU. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-171-5950, 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
103-8S
NSN: 5325-00-171-5950
FSC: 5325
CAGE: 18566 — MKC ELECTRONICS CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
seat_angle37.0 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARED (TUBE) ALL ENDS
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
mounting_positionHORIZONTAL OR VERTICAL
operating_pressure4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_devicePOPPET
nominal_thread_size0.750 INCHES ALL ENDS IN
NSN5325-00-171-5950
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 103-8S · 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
GROMMET STYLE: ROUND
GROMMET CONSTRUCTION TYPE: SOLID
FLANGE THICKNESS: 0.109 INCHES NOMINAL IN
GROOVE WIDTH: 0.062 INCHES NOMINAL IN
HOLE DIAMETER: 0.375 INCHES NOMINAL IN
LARGE FLANGE OUTSIDE DIAMETER: 0.688 INCHES NOMINAL IN
GROOVE OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
GROMMET STYLEROUND
GROMMET CONSTRUCTION TYPESOLID
FLANGE THICKNESS0.109 INCHES NOMINAL IN
GROOVE WIDTH0.062 INCHES NOMINAL IN
HOLE DIAMETER0.375 INCHES NOMINAL IN
LARGE FLANGE OUTSIDE DIAMETER0.688 INCHES NOMINAL IN
GROOVE OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
OVERALL HEIGHT0.281 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
172-4Interchangeable
interchangeable cross-reference
interchangeable
1C4490-2Interchangeable
interchangeable cross-reference
interchangeable
94-001Interchangeable
interchangeable cross-reference
interchangeable
7025392Interchangeable
interchangeable cross-reference
interchangeable
400200-1Interchangeable
interchangeable cross-reference
interchangeable
415697PC8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 103-8S?
103-8S is a VALVE,CHECK.
What parts can replace 103-8S?
There are 23 known substitutes for 103-8S: 172-4, 1C4490-2, 94-001 and 20 more. Substitute compatibility should be verified for your specific system.
Is 103-8S still available?
103-8S is currently cancelled.
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