Model: C2898-1

Shoulder Screw

Special Features:

Undercut under the shoulder 0.050 in. Min and 0.100 in. Max lg; 0.615 in. Min and 0.625 in. Max dia

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.820 inches
Fastener Length
Between 2.690 inches and 2.710 inches
Head Style
Bevel-conical
Head Diameter
Between 0.122 inches and 0.123 inches
Head Height
Between 0.290 inches and 0.310 inches
Shoulder Diameter
0.748 inches first shoulder and 0.749 inches first shoulder
Shoulder Length
1.870 inches first shoulder and 1.890 inches first shoulder
Internal Drive Style
Hexagon
Thread Diameter
0.625 inches
Width Across Flats
Between 0.375 inches and 0.378 inches
Thready Qty Per Inch (tpi)
18
Min. Tensile Strength (psi)
300000 pounds per square inch
Hardness Rating
55.0 rockwell c and 58.0 rockwell c
Shoulder Shape
Round first shoulder
Material
Vanadium
Surface Treatment
Cadmium
Surface Treatment Specification
Mil-c-8837, type 1 cl 2 military specification single treatment response
Thread Series Designator
Unf
NSN
5305-00-891-3673
Part Number
C2898-1
Description
Screw,shoulder
CAGE
81755

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes bolt, internal wrenching and screw, cap, socket head.

Part C2898-1 NSN 5305-00-891-3673

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22846
FIIG:
A003B0
Concept No.:
App. Key:
SL
Cond. Code:
1
Status:
A

Material Classification

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 8112991000
  • SITC: 69999
  • End Use: Finished metal shapes
  • NAICS: 331491
  • USDA: 1

Freight Class: Germanium and articles thereof, wrought, waste and scrap, powders, nesoi

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