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1037-618 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

1037-618: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410 OVERALL, head_style: FLAT CHAMFER, head_height: 0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.176 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN, thread_length: 0.225 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-027-5020, 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
1037-618
NSN: 5305-01-027-5020
FSC: 5305 — Screws
CAGE: 66503 — WOODWARD, INC. DIV FUEL SYSTEMS AND CONTROLS (USA)
SPECIFICATIONS
materialSTEEL COMP 410 OVERALL
head_styleFLAT CHAMFER
head_height0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.176 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN
thread_length0.225 INCHES MINIMUM IN
fastener_length0.285 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
hardness_rating25.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.094 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
NSN5305-01-027-5020
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1037-618 · 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
•
WIDTH ACROSS FLATS: 0.094 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.285 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: SP-151 FSCM 66503 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.225 INCHES MINIMUM IN
•
HARDNESS RATING: 25.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.112 INCHES IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.094 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
HEAD HEIGHT0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
FASTENER LENGTH0.285 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONSP-151 FSCM 66503 MFR REF SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.225 INCHES MINIMUM IN
HARDNESS RATING25.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5613 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.112 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1037-618?
1037-618 is a SCREW,CAP,SOCKET HEAD.
What is the NSN for 1037-618?
1037-618 is cataloged in the U.S. Government catalog under NSN 5305-01-027-5020. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.