4-40 – Mouser Singapore

.hide-partial { max-height: none; } .show-more { display: none; }

Results: 3,057

Applied Filters:

Thread Size = 4-40

Manufacturer

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS
Screws & Fasteners Cap Panel Screw SS 4-40 1/4in 7083-SS RAF Electronic Hardware 1: $2.62 80In Stock	Mfr. Part No. 7083-SS Mouser Part No 761-7083-SS	RAF Electronic Hardware	Screws & Fasteners Cap Panel Screw SS 4-40 1/4in	Datasheet	80In Stock	$2.62 $2.41	Min.: 1 Mult.: 1
Screws & Fasteners 5/16 LNGTH 3/8 DIA WSHR FACE THMB SCREW 7100-SS RAF Electronic Hardware 1: $2.19 205In Stock	Mfr. Part No. 7100-SS Mouser Part No 761-7100-SS	RAF Electronic Hardware	Screws & Fasteners 5/16 LNGTH 3/8 DIA WSHR FACE THMB SCREW	Datasheet	205In Stock	$2.19 $2.04 $2.03 $1.97	Min.: 1 Mult.: 1
EMI Feedthrough Filters Hermetically Sealed Threaded Case Filter Spectrum Control SCI-2120-005H SCI-2120-005H Spectrum Control 1: $188.16 99In Stock Factory Special Order	Mfr. Part No. SCI-2120-005H Mouser Part No 657-SCI-2120-005H Factory Special Order	Spectrum Control	EMI Feedthrough Filters Hermetically Sealed Threaded Case Filter		99In Stock	$188.16 $170.15 $167.55 $155.77 View $153.73 Quote	Min.: 1 Mult.: 1	No
Screws & Fasteners Deco Wing Nut, #4-40 Thread, 5/16 Height 0600440DLWN Essentra 1: $0.381 974In Stock	Mfr. Part No. 0600440DLWN Mouser Part No 144-0600440DLWN	Essentra	Screws & Fasteners Deco Wing Nut, #4-40 Thread, 5/16 Height	Datasheet	974In Stock	$0.381 $0.343 $0.291 $0.273 View $0.252 $0.237 $0.223 $0.22 $0.199	Min.: 1 Mult.: 1
D-Sub Tools & Hardware #4-40 UNC 0.187 female screw set kit, 2 per package C89E014009 Northern Technologies 1: $1.32 9In Stock 400Expected 11/12/2026 New At Mouser	Mfr. Part No. C89E014009 Mouser Part No 19-C89E014009 New At Mouser	Northern Technologies	D-Sub Tools & Hardware #4-40 UNC 0.187 female screw set kit, 2 per package Learn More about Northern Technologies northern tech d sub female screw set extender kit	Datasheet	9In Stock 400Expected 11/12/2026	$1.32 $1.18 $1.13 $1.06 View $0.96 $0.838 $0.797 $0.745 $0.737	Min.: 1 Mult.: 1
D-Sub Tools & Hardware I/O MDR CONNECTOR JACK SOCKET SCREW 3341-17 3M Electronic Solutions Division 1: $8.27 262In Stock 400On Order	Mfr. Part No. 3341-17 Mouser Part No 517-3341-17	3M Electronic Solutions Division	D-Sub Tools & Hardware I/O MDR CONNECTOR JACK SOCKET SCREW	Datasheet	262In Stock 400On Order	$8.27 $8.02 $7.34 $6.19 View $5.96 $5.10 $4.96 Quote	Min.: 1 Mult.: 1
D-Sub Tools & Hardware MDR PANEL MNT SCREW 3344-44 3M Electronic Solutions Division 1: $2.83 326In Stock	Mfr. Part No. 3344-44 Mouser Part No 517-3344-44	3M Electronic Solutions Division	D-Sub Tools & Hardware MDR PANEL MNT SCREW	Datasheet	326In Stock	$2.83 $2.41 $2.15 $1.96 View $1.85 $1.80 $1.71 $1.60 $1.52	Min.: 1 Mult.: 1
Standoffs & Spacers .250 x .250 4-40 THREADED HEX STANDOFF BRASS 1450A Keystone Electronics 1: $0.966 1,418In Stock	Mfr. Part No. 1450A Mouser Part No 534-1450A	Keystone Electronics	Standoffs & Spacers .250 x .250 4-40 THREADED HEX STANDOFF BRASS	Datasheet	1,418In Stock	$0.966 $0.732 $0.654 $0.555 View $0.49 $0.418 $0.386 $0.359	Min.: 1 Mult.: 1
Standoffs & Spacers RND .250X.750 ZBRASS 1547D Keystone Electronics 1: $1.84 389In Stock	Mfr. Part No. 1547D Mouser Part No 534-1547D	Keystone Electronics	Standoffs & Spacers RND .250X.750 ZBRASS Learn More about Keystone Electronics keystone female threaded standoffs	Datasheet	389In Stock	$1.84 $1.40 $1.35 $1.23 View $1.18 $0.832 $0.755 $0.748	Min.: 1 Mult.: 1
Standoffs & Spacers SWAGE THREAD STDOFF .140"L BRASS 4-40 1623-3 Keystone Electronics 1: $1.92 96In Stock	Mfr. Part No. 1623-3 Mouser Part No 534-1623-3	Keystone Electronics	Standoffs & Spacers SWAGE THREAD STDOFF .140"L BRASS 4-40	Datasheet	96In Stock	$1.92 $1.44 $1.32 $1.26 View $1.16 $0.869 $0.802	Min.: 1 Mult.: 1
Standoffs & Spacers SWAGE THREAD STDOFF .140"L BRASS 4-40 1625-3 Keystone Electronics 1: $2.38 11In Stock	Mfr. Part No. 1625-3 Mouser Part No 534-1625-3	Keystone Electronics	Standoffs & Spacers SWAGE THREAD STDOFF .140"L BRASS 4-40	Datasheet	11In Stock	$2.38 $1.85 $1.77 $1.75 View $1.59 $1.10 $1.05	Min.: 1 Mult.: 1
Standoffs & Spacers 4-40X1/4" SWAGE BRS 1627-2 Keystone Electronics 1: $1.88 184In Stock	Mfr. Part No. 1627-2 Mouser Part No 534-1627-2	Keystone Electronics	Standoffs & Spacers 4-40X1/4" SWAGE BRS	Datasheet	184In Stock	$1.88 $1.43 $1.29 $1.11 View $0.922 $0.854 $0.775 $0.755	Min.: 1 Mult.: 1
Standoffs & Spacers HEX .25X.5 NICKEL 1629-2 Keystone Electronics 1: $2.38 175In Stock	Mfr. Part No. 1629-2 Mouser Part No 534-1629-2	Keystone Electronics	Standoffs & Spacers HEX .25X.5 NICKEL	Datasheet	175In Stock	$2.38 $1.85 $1.67 $1.43 View $1.32 $1.11 $1.05	Min.: 1 Mult.: 1
Standoffs & Spacers SWAGE THREAD STDOFF .140"L BRASS 4-40 1629-3 Keystone Electronics 1: $2.76 176In Stock	Mfr. Part No. 1629-3 Mouser Part No 534-1629-3	Keystone Electronics	Standoffs & Spacers SWAGE THREAD STDOFF .140"L BRASS 4-40	Datasheet	176In Stock	$2.76 $2.15 $1.93 $1.65 View $1.39 $1.27 $1.18	Min.: 1 Mult.: 1
Standoffs & Spacers .375X.140 RND 4-40 THRD 1651-3 Keystone Electronics 1: $1.67 28In Stock	Mfr. Part No. 1651-3 Mouser Part No 534-1651-3	Keystone Electronics	Standoffs & Spacers .375X.140 RND 4-40 THRD	Datasheet	28In Stock	$1.67 $1.27 $1.14 $0.987 View $0.823 $0.763 $0.748	Min.: 1 Mult.: 1
Standoffs & Spacers 4-40 X .250 STDOFF 1652-2 Keystone Electronics 1: $2.27 812In Stock	Mfr. Part No. 1652-2 Mouser Part No 534-1652-2	Keystone Electronics	Standoffs & Spacers 4-40 X .250 STDOFF	Datasheet	812In Stock	$2.27 $1.78 $1.71 $1.69 View $1.50 $1.04 $0.952	Min.: 1 Mult.: 1
Standoffs & Spacers HEX .187X1.00 ZBRASS 1656B Keystone Electronics 1: $2.24 360In Stock	Mfr. Part No. 1656B Mouser Part No 534-1656B	Keystone Electronics	Standoffs & Spacers HEX .187X1.00 ZBRASS Learn More about Keystone Electronics keystone female threaded standoffs	Datasheet	360In Stock	$2.24 $1.71 $1.55 $1.52 View $1.51 $1.39 $1.02 $0.938 $0.865	Min.: 1 Mult.: 1
Standoffs & Spacers RND .187X.750 ZBRASS 1657A Keystone Electronics 1: $1.73 39In Stock	Mfr. Part No. 1657A Mouser Part No 534-1657A	Keystone Electronics	Standoffs & Spacers RND .187X.750 ZBRASS Learn More about Keystone Electronics keystone female threaded standoffs	Datasheet	39In Stock	$1.73 $1.32 $1.19 $1.14 View $1.05 $0.793 $0.718 $0.668	Min.: 1 Mult.: 1
Standoffs & Spacers RND .187X1.00 ZBRASS 1657B Keystone Electronics 1: $2.23 360In Stock	Mfr. Part No. 1657B Mouser Part No 534-1657B	Keystone Electronics	Standoffs & Spacers RND .187X1.00 ZBRASS Learn More about Keystone Electronics keystone female threaded standoffs	Datasheet	360In Stock	$2.23 $1.70 $1.54 $1.50 View $1.32 $1.02 $0.925	Min.: 1 Mult.: 1
Standoffs & Spacers 4-40 X .250 STDOFF 1746-2 Keystone Electronics 1: $1.06 407In Stock	Mfr. Part No. 1746-2 Mouser Part No 534-1746-2	Keystone Electronics	Standoffs & Spacers 4-40 X .250 STDOFF	Datasheet	407In Stock	$1.06 $0.843 $0.80 $0.715 View $0.692 $0.562 $0.521 $0.51	Min.: 1 Mult.: 1
Standoffs & Spacers HEX .187X.625 ZBRASS 1804 Keystone Electronics 1: $1.59 239In Stock 550Expected 15/2/2027	Mfr. Part No. 1804 Mouser Part No 534-1804	Keystone Electronics	Standoffs & Spacers HEX .187X.625 ZBRASS Learn More about Keystone Electronics keystone female threaded standoffs	Datasheet	239In Stock 550Expected 15/2/2027	$1.59 $1.20 $1.08 $1.03 View $1.01 $0.726 $0.658 $0.639	Min.: 1 Mult.: 1
Standoffs & Spacers HEX .250X.875 ALUM 1809 Keystone Electronics 1: $0.979 993In Stock 10,000Expected 14/12/2026	Mfr. Part No. 1809 Mouser Part No 534-1809	Keystone Electronics	Standoffs & Spacers HEX .250X.875 ALUM Learn More about Keystone Electronics keystone female threaded standoffs	Datasheet	993In Stock 10,000Expected 14/12/2026	$0.979 $0.749 $0.711 $0.636 View $0.534 $0.434 $0.404 $0.384	Min.: 1 Mult.: 1
Standoffs & Spacers HEX .250X2.00 ZBRASS 1832 Keystone Electronics 1: $4.15 92In Stock	Mfr. Part No. 1832 Mouser Part No 534-1832	Keystone Electronics	Standoffs & Spacers HEX .250X2.00 ZBRASS	Datasheet	92In Stock	$4.15 $3.69 $2.95 $2.62 $1.82	Min.: 1 Mult.: 1
Standoffs & Spacers RND .250X.625 ALUM 1839 Keystone Electronics 1: $0.83 87In Stock	Mfr. Part No. 1839 Mouser Part No 534-1839	Keystone Electronics	Standoffs & Spacers RND .250X.625 ALUM Learn More about Keystone Electronics keystone female threaded standoffs	Datasheet	87In Stock	$0.83 $0.63 $0.578 $0.49 View $0.449 $0.377 $0.341 $0.317	Min.: 1 Mult.: 1
Standoffs & Spacers RND .250X.875 ALUM 1846 Keystone Electronics 1: $1.24 142In Stock	Mfr. Part No. 1846 Mouser Part No 534-1846	Keystone Electronics	Standoffs & Spacers RND .250X.875 ALUM Learn More about Keystone Electronics keystone female threaded standoffs	Datasheet	142In Stock	$1.24 $0.957 $0.884 $0.777 View $0.756 $0.704 $0.528 $0.50 $0.483	Min.: 1 Mult.: 1