Solenoid Bolt & Firing Mechanism

Assembly

Lag screws aka lag bolts 002.png · Commons ↗ Report photo

Two independent high-power solenoids that hold the door locked; only when the electronic timer permits (and voltage is applied) do both bolts retract simultaneously.

Direct parts	6
Total parts	12
Used in	2 assemblies
Class	Assembly

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Two independent high-power solenoids that hold the door locked; only when the electronic timer permits (and voltage is applied) do both bolts retract simultaneously. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Solenoid Bolt & Firing Mechanism parts and their functions

6 top-level parts · 12 parts in total · full bill of materials below

Solenoid Bolt & Firing Mechanism parts diagram: 1 solenoid coil, 2 bolt plunger, 3 return spring, 4 bolt strike, 5 relay driver, 6 connector. 12 parts in 6 top-level items. — Solenoid Bolt & Firing Mechanism parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Solenoid Coil	2×	24 VDC solenoid, 20–50 W per coil, 500+ lbf static holding force, stroke 0.5–1.0 inch
2	Bolt Plunger	2×	Steel rod (hardened), 0.75 inch diameter, extends from solenoid coil, engages door strike
3	Return Spring	2×	Heavy compression spring (200 lbf preload) retracts plunger when solenoid is de-energized, fail-safe design
4	Bolt Strike	2×	Hardened steel block welded to frame, receives bolt plunger with shallow pocket (prevents side-shear attacks)
5	Relay Driver	2×	Power relay or MOSFET gate driver handles inrush current for solenoid coil (can be 50+ A peak)
6	Connector	2×	Heavy-gauge wire (12 AWG minimum) from electronic timer to relay; shielded for EMI

3D model

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Build & assembly graph

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Bill of materials for Solenoid Bolt & Firing Mechanism

6 top-level lines · 6 rows shown · 12 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Solenoid Coil	time-delay-safe-solenoid-coil	2×	2	·	part
2	Bolt Plunger	time-delay-safe-bolt-plunger	2×	2	·	part
3	Return Spring	time-delay-safe-return-spring	2×	2	·	part
4	Bolt Strike	time-delay-safe-bolt-strike	2×	2	·	part
5	Relay Driver	time-delay-safe-relay-driver	2×	2	·	part
6	Connector	connector	2×	2	·	part

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Where the solenoid bolt & firing mechanism is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Office & Retail Equipment 1 Time-Delay Safe

Used in 2 assemblies

Time-Delay Safe Door & Bolt Work

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.01–$2. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇮🇳Sundram Fasteners sundram.com ↗	Chennai, IN	Fasteners	10,000 pcs	3–5 wks
🇮🇳Lakshmi Precision Screws lpsindia.com ↗	Rohtak, IN	Fasteners	10,000 pcs	3–5 wks
🇨🇳Suzhou Escort escort-fastener.com ↗	Suzhou, CN	Fasteners	10,000 pcs	3–5 wks
🇨🇳Shanghai Tianbao tbfastener.com ↗	Shanghai, CN	Fasteners	10,000 pcs	3–5 wks
🇮🇳Sterling Tools sterlingtools.in ↗	Faridabad, IN	Fasteners	10,000 pcs	3–5 wks