218004851 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

218004851: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING FEATURE, head_style: FLAT FILLISTER, head_height: 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN, fastener_length: 1.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-112-7881, 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

218004851

NSN: 5305-01-112-7881
NIINs: 011127881, 014301807
FSC: 5305 — Screws
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)

SPECIFICATIONS

material	PLASTIC POLYAMIDE NYLON LOCKING FEATURE
head_style	FLAT FILLISTER
head_height	0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
thread_class	3A A
head_diameter	0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
fastener_length	1.000 INCHES NOMINAL IN
locking_feature	PATCH OR PELLET OR STRIP THREADS
width_across_flats	0.312 INCHES NOMINAL IN
internal_drive_style	HEXAGON
nominal_thread_diameter	0.375 INCHES IN
thread_quantity_per_inch	18
thread_series_designator	UNIFIED NATIONAL COARSE (UNC)
NSN	5305-01-112-7881

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN

•

HEAD HEIGHT: 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN

•

FASTENER LENGTH: 0.969 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD LENGTH: 0.844 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN

•

HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL

•

NOMINAL THREAD DIAMETER: 0.375 INCHES IN

•

HEAD STYLE: FLAT CHAMFER

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
HEAD HEIGHT	0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
FASTENER LENGTH	0.969 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.844 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
HARDNESS RATING	38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER	0.375 INCHES IN
HEAD STYLE	FLAT CHAMFER
THREAD DIRECTION	RIGHT-HAND
NONDEFINITIVE SPEC/STD DATA	6 TYPE

SUBSTITUTES & CROSS-REFERENCES 4

FF-S-86Reference document

Same NSN cross-reference

Reference document — Identification reference

MS16997-99LSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

211047671Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

556-6408040-20Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

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 218004851?

218004851 is a SCREW,CAP,SOCKET HEAD.

What parts can replace 218004851?

There are 4 known substitutes for 218004851: FF-S-86, MS16997-99L, 211047671 and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 218004851?

218004851 is cataloged in the U.S. Government catalog under NSN 5305-01-112-7881. This indicates validated use in U.S. government and defense supply chains.

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