Cross Recess Pan Head SEMS Screw with Plain and Spring Washers, Increased Shank

Image is a rendering of this SEMS screw, made from its data sheet dimensions.

SEMS Screws

Cross Recess Pan Head SEMS Screw with Plain and Spring Washers, Increased Shank

SEMS screw: plain washer and curved spring washer held captive under the head. M3 x 0.5 to M3 x 0.5, 316 stainless steel.

Section
SEMS screws
Part no.
SG-SEMS-PPPS-XS
Material
Stainless steel
Units
Metric

Overview

A pan head SEMS screw with a cross recess (type Z) and a plain washer and curved spring washer held captive under the head. The washer is fitted before the thread is rolled, so it cannot fall off: the screw and washer go in as one part, which saves time on the line and stops loose washers getting lost in equipment.

Made in 316 stainless steel (A4), passivated or chemi-black. Head dimensions to ISO 7045 type Z recess, spring washer DIN 137A. Sizes M3 x 0.5 to M3 x 0.5. The increased shank (plain under the head, thread only for length L2) keeps the screw captive in a panel hole after the washers are on.

Specifications

BrandS&G
Part no. seriesSG-SEMS-PPPS-XS
HeadPan head, cross recess (type Z)
WashersPlain washer and curved spring washer, held captive
StandardsISO 7045 type Z recess, spring washer DIN 137A
Material316 stainless steel (A4)
FinishPassivated or chemi-black
ThreadsM3 x 0.5
UnitsMetric (class 6g threads)

Sizes & part numbers

E is the washer stack in the free state. L2 is the full-thread length; the plain shank holds the washers captive. Values in mm. D is the plain washer outside diameter, max./min.

Part no.Thread TA head Ø (mm)B head ht (mm)C driver no.D washer Ø (mm)E (mm)F (mm)Standard L1 (mm)
SG-SEMS-PPPS-XS-M3M3 x 0.55.62.416.0/5.71.9 max2.4 min6, 8, 10, 12, 16, 20, 25, 30

Full-thread length L2 (mm)

ThreadStandard L2 (mm)
M3 x 0.53, 4, 5, 6, 8, 10, 12, 16, 20, 25

How to order

Quote the part number with the underhead length L1 and the full-thread length L2, for example SG-SEMS-PPPS-XS-M3 × 16 mm, L2 5 mm, and the finish: passivated or black. Other lengths are made to order.

Key features

  • Washer held captive: screw and washer fitted as one part
  • No loose washers to drop into equipment
  • 316 stainless steel for corrosion resistance
  • Passivated or black finish
  • Increased shank keeps the screw captive in the panel

Applications

Electronic enclosuresControl panelsInstrumentsMarine & food equipmentRail & defence
Need a length, thread or washer not listed?Other lengths and combinations are made to order. Send us the part number or your drawing.Send enquiry

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