PEMPEM Fastener Catalogue

SP–440–2

S / SS / CLS / CLSS / SP Self-Clinching Nuts · Unified · PDF page 28 · PEM Fastener Catalogue

S / SS / CLS / CLSS / SP Self-Clinching Nuts · Unified · thread .112-40 (#4-40)

Age-hardened A286 stainless, Passivated and/or tested per ASTM A380.

Also written as SP-440-2.

Part number breakdown

SegmentCodeMeaning
TypeSPAge-hardened A286 stainless
Thread440Thread size .112-40 (#4-40)
Shank2

Dimensions

Defines E, C, A, T. Technical diagram of a clinch nut with two views: Left (Plan View: Top-down view showing a circular nut with a serrated/knurled clinching profile. E: Overall diameter. Right (Section View: Side cross-section showing internal threading and profile. C: Diameter of the clinching feature. A: Depth of the clinching pilot. T: Thickness of the nut body. Note: "(Clinching profile may vary" indicating potential manufacturing differences.
DimensionValue
Thread Size.112-40 (#4-40)
Type (Fastener Material) › Hardened Stainless SteelSP
Thread Code440
Shank Code2
A (Shank) Max..054
Rec. Min. Sheet Thickness.056
Hole Size In Sheet +.003 −.000.166
C Max..165
E ±.010.250
T ±.010.070
Min. Dist. Hole ℄ To Edge.19

Material and finish

PropertyValue
TypeSP
ThreadsInternal ASME B1.1 2B/ASME B1.13M, 6H
Fastener MaterialsAge Hardened A286 Stainless Steel
Standard FinishesPassivated and/or Tested per ASTM A380
For use in Sheet HardnessHRB 90/ HB 192 or less

Source: Material and Finish Specifications · PDF page 33

Performance data

PropertyValue
TypeSP
Thread Code440
Shank Code2
Test Sheet Material304 Stainless Steel
Installation (lbs.)10000
Pushout (lbs.)290
Torque-out (in. lbs.)18

Source: SP™ Nuts · PDF page 38

Installation tooling

PropertyValue
Thread Code440
Anvil Dimensions (in.) › A ±.002.255
Anvil Dimensions (in.) › P +.000 –.001.064
Anvil Dimensions (in.) › R Max..010
Anvil Dimensions (in.) › R1 +.005.005
Anvil Part Number8012821
Punch Part Number975200048

Source: SP™ Nuts · PDF page 35

Source

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