Pan Head Cross Recess SEMS Screw with Small Plain and Spring Washers

SEMS screw: small plain washer and spring washer held captive under the head. M2 to M6, stainless steel SS 304.

Section: SEMS screws
Part no.: SGPPSS034…
Material: SS 304 (A2)
Units: Metric

Overview

A pan head SEMS screw with a small plain washer and spring washer held captive under the head. The spring washer sits against the head and the plain washer outside it; both are fitted before the thread is rolled, so they cannot fall off. The screw and washers go in as one part, which saves assembly time and stops loose washers getting lost in equipment.

Made in stainless steel SS 304 (A2). Same can be manufactured in SS 316 (A4) against orders. Sizes M2 to M6.

Specifications

Brand	SGPFS
Part no. series	SGPPSS034…
Head	Pan head, cross recess (Phillips)
Washers	Small plain washer and spring washer, held captive
Material	Stainless steel SS 304 (A2 / 1.4301)
Threads	M2, M2.5, M3, M4, M5, M6 (metric coarse)
Lengths	5 to 50 mm

Dimensions

Values in mm. dk max. head diameter, max.. k max. head height, max.. D max. small plain washer outside diameter, max.. a max. distance from under the head to the full thread, max.. x max. thread run-out, max.. h nom. washer stack (spring washer + plain washer), nominal. m ref. cross recess size m, reference. s max. plain washer thickness, max.. Part number: SG + PPSS (type) + 034 (SS 304) + thread + X + length, for example SGPPSS034M3X14 = M3 × 14 mm.

Size	M2	M2.5	M3	M4	M5	M6
Part no. series	SGPPSS034M2	SGPPSS034M2.5	SGPPSS034M3	SGPPSS034M4	SGPPSS034M5	SGPPSS034M6
Pitch	0.4	0.45	0.5	0.7	0.8	1.0
dk max.	3.50	4.50	5.50	7.00	9.00	10.50
dk min.	3.20	4.20	5.20	6.64	8.50	9.80
k max.	1.50	1.90	2.30	2.90	3.50	4.30
k min.	1.26	1.66	2.01	2.61	3.20	4.00
D max.	4.50	5.00	6.00	8.00	9.00	11.00
a max.	2.50	3.00	3.30	4.00	4.50	6.00
x max.	0.80	0.90	1.00	1.40	1.60	1.80
h nom.	1.00	1.20	1.60	1.80	2.40	3.20
m ref.	1.90	2.70	3.50	4.40	4.90	5.50
s max.	0.30	0.55	0.55	0.90	1.10	1.70
s min.	0.30	0.45	0.45	0.70	0.90	1.50

Lengths & part numbers

Length L in mm, measured under the head. Each cell is the part number for that thread and length.

Length L (mm)	M2	M2.5	M3	M4	M5	M6
5	SGPPSS034M2X5	SGPPSS034M2.5X5	SGPPSS034M3X5
6	SGPPSS034M2X6	SGPPSS034M2.5X6	SGPPSS034M3X6	SGPPSS034M4X6
8	SGPPSS034M2X8	SGPPSS034M2.5X8	SGPPSS034M3X8	SGPPSS034M4X8	SGPPSS034M5X8
10	SGPPSS034M2X10	SGPPSS034M2.5X10	SGPPSS034M3X10	SGPPSS034M4X10	SGPPSS034M5X10	SGPPSS034M6X10
12	SGPPSS034M2X12	SGPPSS034M2.5X12	SGPPSS034M3X12	SGPPSS034M4X12	SGPPSS034M5X12	SGPPSS034M6X12
14	SGPPSS034M2X14	SGPPSS034M2.5X14	SGPPSS034M3X14	SGPPSS034M4X14	SGPPSS034M5X14	SGPPSS034M6X14
16	SGPPSS034M2X16	SGPPSS034M2.5X16	SGPPSS034M3X16	SGPPSS034M4X16	SGPPSS034M5X16	SGPPSS034M6X16
20		SGPPSS034M2.5X20	SGPPSS034M3X20	SGPPSS034M4X20	SGPPSS034M5X20	SGPPSS034M6X20
25		SGPPSS034M2.5X25	SGPPSS034M3X25	SGPPSS034M4X25	SGPPSS034M5X25	SGPPSS034M6X25
30			SGPPSS034M3X30	SGPPSS034M4X30	SGPPSS034M5X30	SGPPSS034M6X30
35				SGPPSS034M4X35	SGPPSS034M5X35	SGPPSS034M6X35
40					SGPPSS034M5X40	SGPPSS034M6X40
45						SGPPSS034M6X45
50						SGPPSS034M6X50

SS 304 as standard; same can be manufactured in SS 316 against orders. Other lengths are made to order.

How to order

Quote the part number from the table, for example SGPPSS034M3X14, and the quantity. For SS 316, add "SS 316" to your enquiry.

Key features

Spring washer and plain washer held captive: screw and washers fitted as one part
No loose washers to drop into equipment
Stainless steel SS 304; SS 316 against orders
Faster assembly on the line

Applications

Electrical panelsElectronic enclosuresInstrumentsAppliancesMachinery covers

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

More SEMS screws

Pan Head Cross Recess SEMS Screw with Plain and Spring Washers