H438-4BC8

Machine Screw

NSN 5305-00-579-4840

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
UOM:
NIIN:
005794840

Detail Specifications

Thread Class:
2a
Thread Direction:
Right-hand
Thread Length:
Between 0.450 inches and 0.500 inches
Fastener Length:
0.500 inches
Head Style:
Binding
Head Diameter:
Between 0.223 inches and 0.225 inches
Head Height:
Between 0.056 inches and 0.068 inches
Internal Drive Style:
Cross recess type 1
Thread Diameter:
0.112 inches
Thready Qty Per Inch (tpi):
40
Min. Tensile Strength (psi):
55000 pounds per square inch
Screw Material:
Copper alloy
Screw Material Specification:
Qq-b-613 federal specification single material response or qq-b-626 federal specification single material response or qq-w-321 federal specification single material response
Screw Surface Treatment:
Cadmium
Screw Surface Treatment Specification:
Qq-p-416 type 2, class 3 federal specification single treatment response
Thread Series Designator:
Unc
Nondefinitive Specification/std Data:
1 type and 8s style
NSN:
5305-00-579-4840
Item Name:
Truss Head Cross Recess Machine Screws
Cage Code:
79318

Manufacturer Part Numbers

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
23-00059-056
Cage Code:
00724
RNCC:
3
RNVC:
2
RNAAC:
XX
Status:
A
MSDS:
SADC:
Part Number:
F13-4-8BC
Cage Code:
72314
RNCC:
3
RNVC:
2
RNAAC:
XX
Status:
A
MSDS:
SADC:
Part Number:
BHMS4-40X1-2
Cage Code:
87308
RNCC:
3
RNVC:
2
RNAAC:
XX
Status:
A
MSDS:
SADC:
Part Number:
S2113-17
Cage Code:
92755
RNCC:
3
RNVC:
2
RNAAC:
XX
Status:
A
MSDS:
SADC:
Part Number:
100B5BC4-8
Cage Code:
99872
RNCC:
5
RNVC:
2
RNAAC:
TU
Status:
A
MSDS:
SADC:

Part Identification

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06657
FIIG:
A500D0
Concept No.:
App. Key:
Cond. Code:
1
Status:
A

Part Materials

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Pricing & Availability

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Privacy | Terms

Definition Definition of approved item name (AIN): "Truss Head Cross Recess Machine Screws"

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

Import / Export
  • Schedule B: 7415338550
  • SITC: 69433
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Classification: Other copper screws (not for wood) bolts and nuts


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