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Accurate Screw Machine

NAS1801-4-20 Screws

Estimated Lead Time
Backordered parts: 26 weeks

1.25 Inch Steel Hex head Phillips screws manufactured with 1/4-28 UNJF 3A threads.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Accurate Screw
Display Name NAS1801-4-20
Drive Type Phillips
Finish Cadmium + Chromate
Head Height 0.125 in
Head Type Hex
Length
(Overall) 		1 1/4 in
Length
(Thread) 		1.17 in - 1.249 in
Material Steel
Max Head Height 0.14 in
SKU NAS1801-4-20
Tensile Strength 160000 psi
Thread Size 1/4-28 UNJF 3A
Specs (in metric)
Label Value
Brand Accurate Screw
Display Name NAS1801-4-20
Drive Type Phillips
Finish Cadmium + Chromate
Head Height 3.18 mm
Head Type Hex
Length
(Overall) 		31.75 mm
Length
(Thread) 		29.72 mm - 31.72 mm
Material Steel
Max Head Height 3.56 mm
SKU NAS1801-4-20
Tensile Strength 1103200 kPa
Thread Size 1/4-28 UNJF 3A

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