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Technical Data Sheet
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S-1573 — SPRING,HELICAL,COMPRESSION

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

S-1573: SPRING,HELICAL,COMPRESSION.

The SPRING,HELICAL,COMPRESSION is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, end_style: SPRING END,SQUARED AND GROUND OVERALL, stock_diameter: 0.054 INCHES NOMINAL IN, inside_diameter: 0.892 INCHES NOMINAL IN, special_features: MAX LOAD IN LBS IS 4.400, style_designator: CYLINDRICAL. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-426-2922, 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
S-1573
NSN: 5306-00-426-2922
NIINs: 004262922, 016494313
FSC: 5306 — Bolts
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
end_styleSPRING END,SQUARED AND GROUND OVERALL
coil_quantity5
stock_diameter0.054 INCHES NOMINAL IN
inside_diameter0.892 INCHES NOMINAL IN
special_featuresMAX LOAD IN LBS IS 4.400
style_designatorCYLINDRICAL
spring_free_length1.500 INCHES NOMINAL IN
spring_solid_length0.300 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND
spring_deflection_rate3.700 POUNDS PER INCH NOMINAL LBS
end_item_identificationENGINE, DIESEL
NSN5306-00-426-2922
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S-1573 · 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
•
HEAD HEIGHT: 0.375 INCHES NOMINAL IN
•
FASTENER LENGTH: 4.000 INCHES NOMINAL IN
•
THREAD LENGTH: 1.000 INCHES MINIMUM IN
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.375 INCHES NOMINAL IN
FASTENER LENGTH4.000 INCHES NOMINAL IN
THREAD LENGTH1.000 INCHES MINIMUM IN
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
0768-1023Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
17KP360Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MIL-S-1222Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S-1573?
S-1573 is a SPRING,HELICAL,COMPRESSION.
What parts can replace S-1573?
There are 3 known substitutes for S-1573: 0768-1023, 17KP360, MIL-S-1222. Substitute compatibility should be verified for your specific system.
What is the NSN for S-1573?
S-1573 is cataloged in the U.S. Government catalog under NSN 5306-00-426-2922. This indicates validated use in U.S. government and defense supply chains.
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