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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Type	Material	Inside Diameter	Outside Diameter	Thickness	Thread Size	Color	Series	Packaging
Washers #4 FIBER WASHER .312 348 Keystone Electronics 1: $0.10 15,864In Stock	Mfr. Part No. 348 Mouser Part No 534-348	Keystone Electronics	Washers #4 FIBER WASHER .312	Datasheet	15,864In Stock	$0.10 $0.074 $0.065 $0.055 View $0.045 $0.042 $0.038 $0.035	Min.: 1 Mult.: 1	Flat Washer	Fiber	3.05 mm	7.92 mm	0.81 mm	4			Bulk
Washers Shoulder Washer, Hi-Temp, #4 Screw, 0.150 OD / 0.185 H Busing, Black Polyphenylene Sulfide SW-185-150 Bivar 1: $0.33 195In Stock	Mfr. Part No. SW-185-150 Mouser Part No 749-SW-185-150	Bivar	Washers Shoulder Washer, Hi-Temp, #4 Screw, 0.150 OD / 0.185 H Busing, Black Polyphenylene Sulfide	Datasheet	195In Stock	$0.33 $0.257 $0.223 $0.198 View $0.184 $0.176 $0.169 $0.161 $0.16	Min.: 1 Mult.: 1	Washer	Polyphenylene Sulfide (PPS)	3.1 mm	7.1 mm	5.8 mm	4	Black
Washers Screw Insltr,#4,Natural,.084 in Lg MNI-4-5 Essentra 1: $0.24 1,265In Stock	Mfr. Part No. MNI-4-5 Mouser Part No 144-MNI-4-5	Essentra	Washers Screw Insltr,#4,Natural,.084 in Lg		1,265In Stock	$0.24 $0.189 $0.163 $0.153 View $0.144 $0.143 $0.138	Min.: 1 Mult.: 1	Shoulder Washer	Nylon	2.9 mm	6 mm	3.3 mm	4	Natural	MNI
Washers #4 WASHER NYLON 3118 Keystone Electronics 1: $0.12 4,086In Stock	Mfr. Part No. 3118 Mouser Part No 534-3118	Keystone Electronics	Washers #4 WASHER NYLON	Datasheet	4,086In Stock	$0.12 $0.092 $0.082 $0.069 View $0.057 $0.053 $0.047 $0.044	Min.: 1 Mult.: 1	Flat Washer	Nylon	3.05 mm	0.375 in	0.81 mm	4			Bulk
Washers .375 Flat NYL Wshr .047 Width, #4 3158 Keystone Electronics 1: $0.12 2,635In Stock	Mfr. Part No. 3158 Mouser Part No 534-3158	Keystone Electronics	Washers .375 Flat NYL Wshr .047 Width, #4	Datasheet	2,635In Stock	$0.12 $0.093 $0.082 $0.07 View $0.057 $0.053 $0.048 $0.044	Min.: 1 Mult.: 1	Flat Washer	Nylon	3.05 mm	9.5 mm	1.19 mm	4			Bulk
Washers WASHER #4 SIZE 3196 Keystone Electronics 1: $0.11 1,507In Stock	Mfr. Part No. 3196 Mouser Part No 534-3196	Keystone Electronics	Washers WASHER #4 SIZE	Datasheet	1,507In Stock	$0.11 $0.082 $0.073 $0.061 View $0.05 $0.047 $0.042 $0.039	Min.: 1 Mult.: 1	Flat Washer	Fiber	3.05 mm	7.9 mm	1.57 mm	4			Bulk
Washers .375 Flat Fibre Wshr .062 Width, #4 3197 Keystone Electronics 1: $0.11 1,116In Stock	Mfr. Part No. 3197 Mouser Part No 534-3197	Keystone Electronics	Washers .375 Flat Fibre Wshr .062 Width, #4	Datasheet	1,116In Stock	$0.11 $0.082 $0.073 $0.061 View $0.05 $0.047 $0.042 $0.039	Min.: 1 Mult.: 1	Flat Washer	Fiber	3.05 mm	9.5 mm	1.57 mm	4			Bulk
Washers #4 WASHER NYL .12"ID 3200 Keystone Electronics 1: $0.14 4,159In Stock	Mfr. Part No. 3200 Mouser Part No 534-3200	Keystone Electronics	Washers #4 WASHER NYL .12"ID	Datasheet	4,159In Stock	$0.14 $0.104 $0.093 $0.078 View $0.064 $0.059 $0.054 $0.05	Min.: 1 Mult.: 1	Flat Washer	Nylon	3.05 mm	0.375 in	1.57 mm	4			Bulk
Washers #4 SHOULDER WASHER 340 Keystone Electronics 1: $0.21 2,970In Stock	Mfr. Part No. 340 Mouser Part No 534-340	Keystone Electronics	Washers #4 SHOULDER WASHER	Datasheet	2,970In Stock	$0.21 $0.158 $0.14 $0.119 View $0.098 $0.091 $0.082 $0.076	Min.: 1 Mult.: 1	Shoulder Washer	Nylon	2.9 mm	5.97 mm	1.2 mm	4			Bulk
Washers SHOULDER WASHER SW-031-145 Bivar 1: $0.18 6,353In Stock	Mfr. Part No. SW-031-145 Mouser Part No 749-SW-031-145	Bivar	Washers SHOULDER WASHER	Datasheet	6,353In Stock	$0.18 $0.139 $0.117 $0.112 $0.105	Min.: 1 Mult.: 1	Shoulder Washer	Polyphenylene Sulfide (PPS)	3 mm	7.1 mm	2 mm	4	Black		Bulk
Washers SHOULDER WASHER SW-032-135 Bivar 1: $0.39 1,639In Stock 11,900On Order	Mfr. Part No. SW-032-135 Mouser Part No 749-SW-032-135	Bivar	Washers SHOULDER WASHER	Datasheet	1,639In Stock 11,900On Order On Order Ship Dates Mfr. No: SW-032-135 Stock: 1,639 Can Dispatch Immediately On Order: 4,100 Expected 23/11/2026 7,800 Expected 18/12/2026 Factory Lead Time: 14 Weeks	$0.39 $0.275 $0.22 $0.198 View $0.189 $0.178 $0.154 $0.134 $0.128	Min.: 1 Mult.: 1	Shoulder Washer	Polyphenylene Sulfide (PPS)	3 mm	5.5 mm	1.8 mm	4	Black		Bulk
Washers SHOULDER WASHER SW-040-140 Bivar 1: $0.33 3,215In Stock	Mfr. Part No. SW-040-140 Mouser Part No 749-SW-040-140	Bivar	Washers SHOULDER WASHER	Datasheet	3,215In Stock	$0.33 $0.257 $0.215 $0.198 View $0.188 $0.181 $0.149 $0.141 $0.139	Min.: 1 Mult.: 1	Shoulder Washer	Polyphenylene Sulfide (PPS)	3 mm	6.2 mm	2 mm	4	Black		Bulk
Washers WASHER FLAT #4 NYLON 3198 Keystone Electronics 1: $0.15 3In Stock	Mfr. Part No. 3198 Mouser Part No 534-3198	Keystone Electronics	Washers WASHER FLAT #4 NYLON	Datasheet	3In Stock	$0.15 $0.11 $0.098 $0.082 View $0.068 $0.063 $0.057 $0.052	Min.: 1 Mult.: 1	Flat Washer	Nylon	3.05 mm	0.312 in	1.57 mm	4			Bulk
Washers SHOULDER WASHER SW-125-140 Bivar 1: $0.35 6,372Expected 12/04/2027	Mfr. Part No. SW-125-140 Mouser Part No 749-SW-125-140	Bivar	Washers SHOULDER WASHER	Datasheet	6,372Expected 12/04/2027	$0.35 $0.273 $0.225 $0.208 View $0.197 $0.172 $0.159 $0.149 $0.143	Min.: 1 Mult.: 1	Shoulder Washer	Polyphenylene Sulfide (PPS)	2.8 mm	7.1 mm	4.3 mm	4	Black		Bulk
Washers MICA WASHER 4678 Keystone Electronics Non-Stocked Lead-Time 13 Weeks Factory Special Order	Mfr. Part No. 4678 Mouser Part No 534-4678 Factory Special Order	Keystone Electronics	Washers MICA WASHER	Datasheet	Non-Stocked Lead-Time 13 Weeks		Request a Quote	Transistor Insulator	Mica	3.05 mm	9.5 mm		4			Bulk

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